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 trannysaurusin' her for a while and now she has chronic back spasms"
by Morris G. March 4, 2008
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a trannysaurus is a name used to define a transgender person used as a friendly joke as a nickname
hey trannysaurus want to come for dinner at my house.
by jammeeeeeeeeeeeedodger June 3, 2020
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1. An old drag queen or cross dresser often found sitting at the end of the bar, drunk before noon time.

2. A geriatric cross dresser who just doesn't care about appearance anymore, but feels obligated to go out in drag anyway. Often will spit while talking due to years of intoxication and/or recent stroke.

3. Any queeny homosexual too fucked up to realize how comletely obnoxious they are.
1. Dame Edna is such a trannysaurus mess, look at that make-up.
2. Martina Navratilova looks like a trannysaurus mess, slapping those balls between her legs.
3. Mrs. Doubtfire is the best movie for up-and-coming trannysaurus messes!
4. Marv Albert, you are such a trannysaurus mess!
by SP3 April 30, 2012
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1. A tranny whose large size and/or manly features weaken the intended effect. A large, fearsome tranny.

2. The queen bitch of a social circle of trannies. The alpha shemale.
1. "You kidding? It's obvious, she's like a Trannysaurus Rex."

2. "Don't fuck with Starlinda, she's like Trannysaurus Rex around here."
by Spackle McCrackle January 2, 2008
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a tranny that's tall, loud and anorexic.
Ra ra ra... watch out for that Trannysaurus Rexy!
by t.ranny February 15, 2010
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