Cheers Gov'nor is more than just what you say down at the pub before enjoying a pint of bitter. It's also the name of a new party card game that's up on Kickstarter now by Dare Greater Games. Though you could certainly enjoy this game while down at the pub with your mates. In fact, I've seen versions of this game that are, in fact, drinking games.
In Cheers Gov'nor, the goal is to count to 21. Seems pretty simple, but each round a new rule is added to the stack. The first round always has the numbers 7 and 14 exchanged. Subsequent rounds can swap other numbers around or replace numbers with celebrity names or random objects. So there's always more you have to remember in order to make it to 21. If you complete 21 rounds, you win! If you fail 10 times, though, you lose.
The campaign is over on Kickstarter now and is set to run for another 26 days.