Did you know a full moon is perfect for a werewolf to come out?
I’m gay.
Full Moon Coming Out
Explanation
Explain Bear
Alright, listen up, you big dummy! This joke is simple. 'Come out' can mean a werewolf appearing, OR it can mean someone revealing they're gay. The person sets up the werewolf thing, then BAM! Reveals they're gay. It's a clever twist, even for you.