Noun: a bleach-blond actress in her late forties. she's not a very convincing, or even good actress.
Verb: to suddenly break up with someone, and spread it around before they know you've dumped them.
Did you see that movie with Heather Locklear in it? I avoided that thing like the Plague.
Maria: hey, anna, i'm dumping jason.
anna: wow. that's sudden.
(a few days pass and everyone knows about the break-up)
jason: dude, did she pull a Heather Locklear on me?