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1...Theodore Cleaver 2...A Vagina with the last name, Cleaver.
In the 1960s an actor by the name of Jerry Mathers played the character "Beaver Cleaver", in the iconic TV show "Leave it to Beaver". Although young Mathers was an adorable little boy, the adult Mathers looks like a damn fool! Same goes for the kid on"two and a half men". As a matter of fact, Luke on "Modern Family" looks like a dickhead now, he is no longer near cute anymore. This happens on a lot of TV shows when the kid grows up. Same in real life also. Someone should define this phenomenon.
by Donald Cowboy Cerrone October 16, 2017
Happy St. Patties Day!
Slang term for a particularly large cock. It derives its meaning from the fact that the cock cleaves, or splits open, the beaver, or pussy. A visceral term great for frat boy type bragging.
"Man, I can't believe you took home that Erin slut last night. She must be totally loose."

"Whatever, man. When you have a massive beaver cleaver like mine, it's not a problem.
by Rockwell August 20, 2005
Happy St. Patties Day!
A penis that has been fortified with Viagra and poppers in order to make its presence known in a Montana Beaver. The cleaving process is time consuming and exhausting. It requires a dedicated man willing to screw a woman who has indiscriminately screwed everything, animate and inanimate. The beaver cleaver is a high calling that only a special few can answer.
Jerry was tapped into active duty beaver cleaver status after Fran declared war on all phallic objects, thus acquiring a Montana beaver.
by Fran December 31, 2003
Happy St. Patties Day!
1. Somebody well practiced and accomplished in performing oral sex on a woman;
2. A lesbian;
3. A beardless clam affectionato;
4. A poon burgler;
5. A clit licker extraordinaire
1. I'll never get to score with Joan Jett -- she's a beaver cleaver.
2. I bet I can get Joan Jett to lick my snatch -- she's a beaver cleaver.
3. Thank god Rosie O'Donnell is a beaver cleaver. I'd never dip my dick in that nasty cooter.
by Ward and June Cleaver September 28, 2004
Happy St. Patties Day!
a beaver cleaver refers to the buzzer the female uses to trim her bush in an attempt to portray a clean vagina to her naive partner, who should know what a filthy cunt she really has...
"Her beaver cleaver must be busted, cuz her shit is nappier then ive ever seen it!!!"
by KevinCA$H August 03, 2006
Happy St. Patties Day!
when a girl is on her rag and whips out her tampon to smack someone across the face with it to leave a bloody mark.
After Jane got mad at Fred she whipped out her tampon and gave him a beaver cleaver.
by Muffin Punkinpants July 04, 2010
Happy St. Patties Day!