Meep

From the urban dictionary:

The most versatile word in the English language, or in fact any language! 

Can mean whatever you want it to mean, but the most popular uses are: 
1. An exclamation akin to 'ouch' or 'uh oh..' 
2. Filling in the blanks where other (rude) words would go. 
3. A greeting! I personally say meep instead of hello... 
4. A random expression of happiness used to fill gaps in conversation. 

Meep!

Nice Meep DrSpudnik

MeEeEeEeP

that means roadrunners as well  :)

really?

what?

meep means roadrunners?

roadrunners say meep

meeeeeeeep

the cartoon ones :)

yes, and Wile E. cartoon Coyotes (try to) eat the roadrunners when they don't shut up 

MEEP MEEP, MEP MEP MEEEEP. MEEP. MEEP

lol

sheep.

MEEP SHEEP!!

meeep