What is Heehaw?
1.
to laugh loudly, somewhat like a donkey
What are you heehawing about? My joke wasn't that funny!
2.
A disagreeable boor.
The word is derived from the sound that a donkey makes, therefore it is as if one is calling the heehaw a jackass, without actually using profanity.
When someone has been rude, offensive, boorish, and or inconsiderate one may call that person a heehaw.
"What a heehaw!"
See
3.
the appalling, nasal whining that comes out of jen's mouth when she "sings"
oh god she's heehaw'ing again, COME BUY YOUR EARPLUGS, GOT A 2 FOR 1 DEAL!!
See
4.
The only word in the French language.
Heehaw heehaw heehaw!
5.
The only word in the French language!
Heehaw heehaw heehaw!
Heehaw heehaw!