A person that has the characteristics of a normal being until at random times they will start to act like a dumbass but will eventually come back to their senses.
hawt girl: hiya
guy: hey, wassap?
hawt girl: noothing much whattabout you?
guy: I was wondering if you
ASDAIOSOASDIIHASOIUDHYA*(WHDASDHIAUDSHIUHASDIUH......
hawt girl: ok....
guy: sorry, I can be a randumbass at times.
guy: hey, wassap?
hawt girl: noothing much whattabout you?
guy: I was wondering if you
ASDAIOSOASDIIHASOIUDHYA*(WHDASDHIAUDSHIUHASDIUH......
hawt girl: ok....
guy: sorry, I can be a randumbass at times.
by Fizzle1337 December 16, 2010
Get the Randumbassmug. A random, inappropriate, yet humorous outburst of Fan~Fucking~Tastic foolish fuckery. A characteristic most commonly found in facebook users of higher intelligence.
Randumbassness Nuff said.
by Just FR December 1, 2011
Get the Randumbassnessmug.