A straight male who attempts to protect himself from rape by clenching his buttcheekstogether. Can commonly be observed in prison showers.
Prisoner 1: Look at Billy over there... he’s clenching his cheeks real tight.
Prisoner 2: Must be cause he dropped the soap... he must be a clench defender.
Tyrone: Shit mayne... I’m still comin for that double-wide surprise *inhales* gawd dayummm.
A painful blow job that is the result of the giver incorporating too much teeth into their bobbing of the knob. This painful teething of the cock causes the male to clench their own teeth and often grimace in pain. However, the male receiving will generally endure the pain because even though it hurts, any sucking of the cock is good.
Carl's girlfriend was so inexperienced at giving head. She kept biting and teething his engorged knob. Despite the pain, he endured her Clench Job because after all, he was getting his cock sucked.
The awful, terrible walk that you during the final steps before a major and unexpected gastrointestinal event. The walk is slow and robot-like, as you must keep your sphincter tightly clenched to avoid disaster. Usually takes place once you've reached your home, or if you are in public the bathroom itself.
"I was speed-walking through the grocery store, and once I found the bathroom my body could sense the imminent relief. I nearly lost it right at the door to the bathroom and had to do the clench robot all the way to the stall."
a reliable and easy ratio used to measure a man's hottnes based on his ability to clench his jaw. the more a man clenches his jaw before he's about to kiss a girl, the hotter he is. this can be seen in the movie "step up."