The act of flashing your ass as oppose to a front flash. This is also known as a backflash.
Julia totally just assflashed me!
by Alien in Hotchkiss January 27, 2010
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
Can you define these popular missing words?