Top Definition
A pudgy friendly little neopet.
Hi! I'm a cute little grundo!
by Serabee August 31, 2006
A neopet that is really dumb.
Duh... Im a grundo... gprlffffft
by qwerewq March 18, 2004
When you drink irish whiskey through your ass on the 11th sunday of the month
Would you like to take part in some grundo?
by JAKEARAWRUS May 21, 2010

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