Unstoppable Gaming

Alright, listen up, you big ol' dummy. This joke is all about a word with two meanings, called a double-entendre. "Pounding" can mean playing video games really hard, like when you're mashing buttons, but it also has a super vulgar, crude meaning, referring to a sexual act. So, the joke is saying that *that* act is like video games because once you start, you 'can't stop until you win.' Get it? It's crude and meant to shock you, like when you finally figure out how to tie your shoes. You're welcome.