I was being facetious. I'm sure that catching an STD from a toilet seat is just a story propagated by married men who caught an STD the traditional way but didn't want to admit to cheating on their side.
For the last few years...zero times. I'm not in any way shape or form sexually active. So there's that. When i was though I think i got checked only before and after a new partner. Which isn't good but i was young and dumber.