Top definition
When watching porn: the video you clicked on isn't nearly as hot as you thought it would be, based on the thumbnail pictures you saw
This video of 5 army girls is such a thumbnails down, how disappointing.
by Marky E April 25, 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