Top Definition
Stuffing ones finger along with the male member into a woman to appear to have a larger penis.
Man she screamed when I gave her a mighty mouse!
by Tom June 05, 2003
sweetest cartoon super hero ever!!!!
person: Whoa that weird flying mouse just saved those people.
other person:thats no ordinary flying mouse its MIGHTY MOUSE!!!!!
by ssdd March 19, 2004
1. small bread eating rodent

2. Crime fighting irc nerd
is it a birn? NO is it a plane? NO ITS MIGHTYMOUSE
by bews October 18, 2001
A lowly 16k on genmay. He really wants an avatar for some reason. Doesn't make threads. Overall fgt.
MightyMouse does not neccessarily know what he's talking about.
Anything he says that may not make sense cannot be used against
him by other pathetic/respectable individuals.
by M|22 April 05, 2005
1. john kim

2. the most hideous, uncool monster on the face of this earth

3. cocky, self-absorbed individual who claims to be sexy but isn't

4. one who causes others to vomit with their uncoolness

5. one whose vocabulary consists of the words and phrases "OWNED!", "NARUTO ROCKS~ TEEHEE", "I LOVE BOYS", and "GO SUCK A BIG ONE"
mighty mouse < meanies

Did you see mighty mouse? He's going on with his nonsense again.
by Meanies August 28, 2004
A guy with an implanted penis prosthetic. The device is inflated with a pump in the scrotum to provide an erection and does not go flaccid until released allowing the owner to enjoy multiple orgasms and fuck for as long as his partner desires. Usually a more mature male and prostate cancer survivor who produces no cum allowing the owner to go bareback without fear.
That Mighty Mouse guy looked like my grandpa, but left my ass tingling for three days.
by 1egg2fry May 23, 2016
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