RUKM

A texting/IMing abbreviation for "are you kidding me?"

When said out loud, it is pronounced roo-kum.

Alex: So I started going out with Laura.

Joey: RUKM?! I thought you hated her!

-or-

Martin: I got a 58 on my math test?! RUKM! I studied all night for that!

by mrwaters_algebra_period2 October 31, 2009