1 definition by Really messed up
Coming home from a Christmas Eve party early and find your parents having sex on the couch. You father is dressed up like Santa and your mother is dressed up like Mrs. Clause.
Chris: I walked in on my parents having sex on Christmas Eve.
Peggy: That's a real Nightmare before Christmas!
Peggy: That's a real Nightmare before Christmas!
by Really messed up March 27, 2010