A nickname that is often used, by either parents, relatives, or their friends, to refer to people with the name "Sean" when they were a child. The nickname seems to never wear off, and is often a source of embarrassment for the person in question when a parent uses it to address their child in public.
"Dude, did your mom just call you 'Seanboy'?"
by seraphin02835 February 24, 2009
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