My favorite one is one that I can’t find with the few minutes of image searching I’m willing to do on such a topic. It features a presumably post coital image of, IIRC, Princess Peach and a very embarrassed looking Sonic. Her majesty is saying something like “well, one thing is true, Sonic … You are faster than Mario.”

It’s amazing how many mostly unrelated memories were brought back to me just by being vaguely reminded that that exists.