Basically legit and titty. It can be used in any context wether it's about actual titties or if it's using the word tits to describe something awesome...or legit. Legittitties are the legitest of all legit titties.
"Bro I got slammed at that party last night and I don't remember a lot, but it was probably legittitty"
by Thehumorninja June 05, 2017