Skip to main content
When your lady is in the "reverse cowgirl" position, you put clench your hand with the middle knuckle raised (similar to the frogging punch). With this protruding knuckle you then place it on her spine and rub back in forth. The feeling is very intense/ticklish. It will cause her to moan in a weird fashion and her arms will become incapacitated past the forearms for a brief moment.

Some women also seem to do weird things with their mouths during the moment.
man 1: "my girlfriend is super mad at me"
man 2: "why is that"
man 1: "I was T Rexin' her for a while and now she has chronic back spasms"
T Rex by Morris G. December 9, 2008
Related Words

pelican rex 

a pelican that flies away on jurassic park but is mistaken for a pteryaldactyl..therefore its a pelican rex!
Taylor:oh shit the dinosaurs got out!

Jordan:haha no they're pelicans

Taylor:What noway!

Jordan:they must be pelican rexs'
pelican rex by p-rex-inator December 3, 2009

Pms-rex. 

when a female is being over-dramatic about pmsing, and starts acting like an angry t-rex.
guy1"wow whats wrong with her?"
guy"no clue but she's being a pms-rex

Pms-rex.
Pms-rex. by N3 May 2, 2010

handsomesaurus rex 

A funny way of saying a male is very good-looking.
OMG, did you see the size of that bulge in his pants? He is such a handsomesaurus rex!
handsomesaurus rex by fuchsiaroses November 29, 2010

Oogiesaurus Rex

When a WoW player is fail or doesn't get his/her own way and starts to rage, releasing all pent up hostility blaming everyone on vent and in guild. Said person usually ninja logs after rage is over.
If we wipe again on this boss, someone is gonna go Oogiesaurus Rex.
Oogiesaurus Rex by Haelia January 19, 2011

Yankasaurus Rex 

A prehistoric bug found mostly in Pennsylvania showers. This bug is known to tug on body hair. It is very illusive and has never been photographed.
"Jordan I just saw t Yankasaurus Rex yank on your back hair!"