Similar to gaydar, this is a
natural ability for fag hags to recognize gays. The term gaydar isn't
appropriate for hags, because hags are straight. Hence, the term hagdar, because every card-carrying fag hag can spot herself a gay a mile away and be his best friend as fast as you can say "Bette Midler". Note: hagdar is more sensitive to the male
homosexual, as lesbians can be so difficult to discern, they often can't pick each other out of a crowd.