A person who divulges personal information about themselves, completely unsolicited; to any and everyone at will.
Sally: Oh hi Becky! Fancy running into you here.

Becky: Yeah, just doing some shopping. You know I just got ANOTHER promotion at work. Yep - Vice President now. And Tom just got that new Mercedes...yeah, he gave the old one to our youngest, who just got accepted into Harvard.....

Sally" **thinking to herself** OMG, this heifer is such a BIO-TOOTER! Note to self...next time, pretend not to see her.
by Chicki Tee November 30, 2010
Get the Bio-tooter mug.