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.
A Dirty Ramiro is when you take one girl and fuck her to make thousands of kids but then the girl leaves you so you have to raise thousands of kids and do a great jobbecause you are a great father to all of your sons.