1) a blissfully wide post-coital grin indicative of particularly satisfying sex. usually indicates a strong sense of emotional closeness with the partner responsible for said sex. permagrin derrived from sex can often last for an entire day. this phenomenon is primarily experienced by females, but under certain circumstances can be found in males for the same reason.
2) a blank, complacent smile experienced after smoking an especially copious ammount of marijuana. permagrin will often fade once the initial high tapers off a bit, and the smoker regains cognitive abilities.
3) the blank, starry eyed grin which acompanies the ingestion of psychedelics. this type of permagrin typically occurs while observing something particularly prone to producing hallucinations, such as a moving light or toy.
1)Kim: "Wow... you've got permagrin. Have a good night?"
Jane: "Yep. Ten back to back orgasms. I love Reggie..."
2) Mike: "Heh... looks like those brownies are kicking in. Kev's totally got permagrin..."
3) Rich: "Is Raul tripping? He's been staring at that mirror for fifteen minutes with this permagrin on his face the entire time."
To mass-message a large number of people using an identical message via the comment, wall, or guestbook section of social networking sites (ie, myspace or friendster), often for the purpose of quickly alerting a large number of people to information such as an event or breaking news story.
Nicole: Hey, did you tell everyone to meet at Shakedown on Saturday?
Carlos: Yeah, i cluster-commented the flyer to everyone on myspace.
A shortened nickname for Senator John McCain.
Influenced by the recent trend for abbreviating celebrity names by using the first letter of the celeb's first name, with the first syllable of the celeb's last name (ie, Jennifer Lopez=Jlo)