Anal - vaginal

Oooook, so, I've never done anal, but i was considering doing it.... but then yesterday i saw this video on buzzfeed called truffle butter and thats just really gross. And i dont want that to happen to me! Lol

So, my question is, when you girls do anal, and want to change it to vaginal, the guy always has to wash his dick, or he uses a baby wipe, or something like that? Isnt it awkward??!