having sex doggystyle and placing your thumbs to the sides of your head and extending your fingers like antlers. The girl (or guy) recieving is not supposed to know. If you have a witness you've joined the bull moose club.
Last night she had no idea I pulled a bull moose. Larry was secretly watching and now I'm in the bull moose club!
by h.d. April 15, 2006

by jwrites1 November 7, 2010

by LogicSays June 11, 2018

by Woobilly Beall October 27, 2010

by ewconti January 2, 2010

to blow a load in a girls hair and then proceed to make antlers with her hair then drying and hardening
i sprayed my load on her head and gave her a creamy moose to make a nice rack to go with her nice rack
by what the faulk February 25, 2009
