It's is the name of the hot blonde female protagonist in a 90's TV show called 'Buffy the vampire slayer' played by Sarah Michelle Gellar, In which Buffy Summers denies all the laws of female blonde girls in teen movies by actually punching people in the face instead of screaming and running for help. Many geeks and even non geeks have begun worshipping the series as it turns out to be really good even though it looks like some Twilight prequel.
by Blackismyhappycolour March 30, 2017
A colorful way of saying someone has sold out. Based on the character Angel on the show Buffy the Vampire Slayer, who lost his soul after having sex with Buffy.
by Alex Stockwell September 21, 2007