Top definition
A dumbthingy is a sometimes mischievous or weird person. dumbthingies are commonly encountered on IRC or ICQ. They sometimes advertise weird non-existing scripts.
I just saw dumbthingy on IRC.
by ircbrot September 16, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug