When you rub poop all over your helmet and wear it for an entire baseball game.
Number 99 pulled a Dirty Ramirez and stunk up the whole stadium.
by TheStoffer October 18, 2009
The act of pinning a girl down with your knees on her arms and forcing her to suck your dick.
I knew she wasn't giving any action so I had to resort to the Dirty Ramirez.
by Rip September 04, 2004
It is the act performed after having anal sex with an under-aged person where you collect the fecal matter onto the tip (or helmet) of the penis and forcibly insert it into the mouth of said under-aged person while pinning their arms with your knees.
Jilly said she wanted to try something new so after her mom went to sleep, I rammed her up the hershey highway and before she could scream I flipped her over and gave her a dirty ramirez.
by Taomaster10000 April 15, 2010