Veganism is a point of contention all year round. So much so that many vegans cut themselves off from the rest of society, huddling together for warmth and smugness, and using online forums to vent their disgust at the morally corrupt dairy- and meat-eating savages who make up most of the populace.
We've all seen comedians look like they're reaching just a little bit too much for the laugh. This is counterproductive. The conceit of standup is that it is effortless, which makes the prospect of generating new comedy a tricky one: you are trying to be funny without looking like you are trying to be funny.