The result is a shape of a christmas tree. High up top, tapering down and out.
The typical reaction is to point it out to your friends and start singing a custom version of the holiday classic, Oh, Christmas Tree, so only the people you are with can hear it.
2.Christmas tree is a song by Lady GaGa, and it is referring to her vagina.
Lady GaGa's Vag.
"oh oh oh Christmas,my Christmas tree is delicious"
me: I Christmas Tree'd him a minute ago.
Nathan: haha nice.