By now, you should know all about Bayer Leverkusen's tweet that seemingly mocked Petr Cech after Arsenal's 2-0 loss to Manchester City.

They were most probably throwing their support for their former goalkeeper, Bernd Leno, but as you would suspect, it did not sit well with the Gunners goalkeeper.

In the age of millennials, it has become a norm for football clubs to engage in banters with their fans online, sometimes at expenses of other footballers and managers. Here, we take a look at nine other times that official club Twitter accounts did not hold back...

ALL YOUR BASE ARE BELONG TO KANE

Last season's Premier League Golden Boot race was a fierce one, with Harry Kane battling it out with eventual winner Mohamed Salah. It got controversial at one point when the Tottenham striker claimed Christian Eriksen's goal against Stoke City for himself. The Premier League's Goal Accreditation Appeals Panel ruled that the goal rightfully belonged to the England star, but that did not stop fans, as well as Salah's former club, AS Roma, from poking fun at him.

MANCHESTER CITY ROAST FELLAINI

Being a Manchester United player, Marouane Fellaini is not exactly popular at Manchester City, which clearly showed back in 2017. Ahead of their EFL Cup quarter-final match against Leicester City, the Manchester outfit's official French Twitter account uploaded a picture of an unnamed player with the caption: "If you find someone that is hidden by the fog, you are unplayable." The player in question was without a doubt Leroy Sane, but one Twitter user asked if it was the Belgium midfielder. The account promptly delivered a savage response before deleting the tweet entirely.

FELLAINI GETTING TEASED... AGAIN

The Twitter jab from City was not the first time Fellaini was targetted by an official club account. In 2014, when he was about to come on for a league match between United and West Bromwich Albion, the latter's social media team hinted their delight that the afro-haired midfielder was playing for the opposition, not them. The tweet came back to haunt them later as Fellaini got on the scoresheet.

JONES AND ZAKARIA FACE OFF

Fellaini's Manchester United team-mate, Phil Jones, is also a popular subject of ridicule due to his often comical expressions on the pitch. However, if Borussia Mönchengladbach's tweet is anything to go by, he might be getting some stiff competition from Switzerland defender Denis Zakaria...

WHY ALWAYS BALOTELLI?

In case you forgot. Mario Balotelli once had a short stint playing for Liverpool. However, it was not a successful one as the Italian struggled for consistency in front of goal. During his time with the Reds, he only managed four goals in 28 appearances before being shipped out on loan to AC Milan and then allowed to leave for Nice. Inevitably, he was an easy target to be made fun of including by Irish club Cabinteely.

STOKE TAKE MICKEY OUT OF LESCOTT

In February 2016, Joleon Lescott infamously tweeted a photo of his Mercedes right after Aston Villa's heavy 6-0 home defeat to Liverpool, angering the club's fans. He later claimed that it was tweeted accidentally from his pocket, which was ridiculed by the Midlands side's next opponents, Stoke City...

BIRTHDAY ROAST FOR MITROVIC

Who says football clubs only troll their rivals' players? During Aleksandar Mitrovic's 21st birthday in 2015, Newcastle United did not forget about it (a lesson learned from the Manchester City-Yaya Toure fiasco, perhaps), nor they forgot about his disciplinary record, which saw him earn two yellow cards and a red card just a month earlier. So, this was the Magpies' birthday greeting for the Serbia striker:

WHAT A GAYLE WANTS

Dwight Gayle left Crystal Palace for Newcastle United in 2016, but after two years, he was spotted still using his former club's luggage to travel around, albeit with the club's logo removed. Naturally, the Eagles wanted it back. The luggage, not Gayle.

Peterborough United, another former club of Gayle, also got in on the banter.

PSG'S SHOUT-OUT TO MOURINHO

Jose Mourinho, much to his dislike, has often been associated with the "parking the bus" tactic. While it is no surprise that football experts and fans like to throw the term around him, it is one when Paris Saint-Germain decided to tweet about it in 2015. After taking a 2-0 lead against Caen thanks to goals from Zlatan Ibrahimovic and Ezequiel Lavezzi, the French champions had to weather a late offensive onslaught from the away side, prompting that tweet in the dying minutes of the game. However, the strategy did not work as they conceded two late goals for the match to finish 2-2. Much to learn they still have.