terdypantz is a term used when name calling. basically it's calling them a terd, but with an additional pantz, so you're telling them that they crapped their pantz, and/or they have terds within their pantz.
bob saget: so here's our next video about-
bill: STFU TERDYPANTZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
bill: STFU TERDYPANTZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
by terdbucket November 20, 2009
Get the terdypantzmug.