When you thump someone on the head for saying or doing something utterly stupid.
Vicki at Glitter Frog gave a web site a "head-thump" for advertising math tutoring but using bad grammar.
by vickilikesfrogs September 24, 2010
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from firstname.lastname@example.org. We'll never spam you.×