Top Definition
A close bro that will just bail out of anything at any given moment. Usually bailing on a bro night without the decency to hit up said bros and give them a heads up. Will some times bail to hang out with dime piece or other erroneous reasons.

can be closely related to a dippopotamus.

Bro 1: Yo where's Timmy at? Thought he was hitting up late night apps with us!

Bro 2: Ah haven't heard from him in a couple hours.

Bro: Dude he is such a bailosaurus.

Example 2:
Guy 1: Johnny, you still going out with us tonight?
Guy 2: Nah man i gotta walk my cat tonight.
Guy 1: God damn bailosaurus!
by not-a-bailosaurus September 12, 2013
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.