1 definition by Neil O'Connor
A baby that a gay man fathers when he is in a "straight" "relationship" to cover the fact that he is gay. Gay men often have gaybies with their beard.
Workmate one: Oh my God, did you hear Frank and Ellen had a baby?
Workmate two: Baby? Eh, hello? Gayby, more like.
Workmate two: Baby? Eh, hello? Gayby, more like.
by Neil O'Connor October 17, 2006