When a person doesn't know he/she is
gay/lesbian, but
EVERYONE else does. (This person is often found
in theatre.)
This is not to be confused with in the closet which implies that the person in question knows about his/her own homosexuality.
#1:
Trent: Omg! I went to see
Patti LuPone on Broadway last week! It was amaaaaazing!
Lisa: Are you sure
you're straight?
Trent: Positive, sweety. I love the ladies :D
#2: Lisa: I can't believe how obvious it is that Trent is gay!
Jessica: Yeah, Trent is mad stuck in the drawer