Definitions by Douglas J. Kozlowski

merf 

1. the sound an irate or horny penguin makes
2. a fuzzy beep

a)
Penguin 1: wanna fuck?
Penguin 2: Merf!

b)
Dude 1: Yo, that car just totally merfed at me.
Dude 2: Dude brah, that's merfed up. Pass the bong.

merf by Douglas J. Kozlowski August 19, 2006