A: So he can tell if he is coming or going.
Cuz Winterfell and it can't get up! :P
Sorry... That came out wrong.
You can dump your load in a washing machine and it won't follow you round for two weeks telling you it loves you
When he was told to "go big or go home," he only had one option. (I've posted this joke here before, but I believe I've been the first, so if you recognize it as a repost it's because I wanted to tell it again!)
A sperm as a 1 in a million chance of actually becoming a human being.
A:They both have a one-in-a-million chance of becoming a human being.