The Blitzkrieg Bop was a fill in word used for a song by The Ramones. It was first "Fith Street Fuck", and as they we're not able to play it onthe radio, they changed it too a word that could be sung the same way.
When you're bumping uglies with a girl and you're about to climax, shout "BLITZKRIEG!!!" and have a group of friends run into the room and zap her with tazers.
When you're walking down the sidewalk, you find the ugliest girl and about two feet before you pass her you rip ass.
Dude 1 (walking): There she is...
Dude 2 : Not again...
(Two feet before ugly chick)
Dude 1: Blitzkrieg.
(Two feet after Dudes walk by)
Ugly Girl: OMG! WTF is that smell!