Clam Up

To suddenly keep unusually quiet, often in regards to the divulging of information.

Carol clammed up about the incident at the bakery, so we never did find out whatever happened to Nate.

When a girl who seems interested suddenly decides that she will not have sex.

"Hey girl, I thought we were going to get down. Why you gotta clam up on me?!"

Dude, this chick was all over me and then she totally clammed up!

by gravytrain21 July 21, 2014

clams up

We should head directly to the pub for beers; CLAMS UP! (while holding thumb pressed against fingers pointed toward the sky)

by Donny Kerabatsos January 29, 2009

Like tea bagging, but when a girl does it, ie a passed out young man has a photo taken with a woman's naked vulva on his face.

OMG, he got so wasted last night and Vickie said that she was going to clam up, and she totally clammed him up. Check out the photo on Flickr!

by Cal952qCal February 27, 2009

my girl clam up then I over lube . Sooo I keep telling my honey don't clam up this time, just wrap your toes around my ears and relax....

by itichie_nocanpo August 27, 2006