Top definition
a verb that is used to describe when someone is exhibiting traits commonly found in people with down syndrome. i.e: acting/saying/doing something dumb.
Brendan: My favorite color is peanut butter

Laura: Quit downsing.


Brendan: Sometimes I smell my wallet to see if it smells like my butt
Laura: Damn it Brendan, why are you so downsy lately???
by ElDub91 May 09, 2011
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