A 2 part sexual act. part 1: a headboard or other hard device is used to provide an initial impact to the females forehead. Part 2: during intercourse, the male chokes the female to unconciousness thus rendering her limp.
by islamorada in 2:45 minutes August 01, 2009
# 2 : i was with this guy last night - he called me a freak and gave me a Pachycephalosaurus . busted my lip right open.
# 1 : not cool man , not cool.
# 1 : not cool man , not cool.
by islamorada in 2:45 minutes December 24, 2010