Best definition
Someone who claims he’s had a lot of sex in his earlier life but never really did. Usually comes up

with stories and get defensive when told not so. 2. Person who is considered an adult and looks like a kid. 3. Someone whose kid he is raising is actually the mail man’s offspring.

Tom: That infant is a Winterbottom! Jill: why do you say that?

Tom: Doe’s this guy even look like he is capable of producing offspring!! Jill: Good point!! I guess you’re right.