Definitions by Rationalize

magnum dong 

A comically large shlong, capable of filling an over sized condom with disturbing ease.

As a pickup line:

<drops magnum condom in front of hot, yet sufficiently easy woman>

"Oh whoops… I dropped my monster condom that I use for my magnum dong."

As demonstrated by Frank Danny DeVito in "It's Always Sunny in Philadelphia".

magnum dong by Rationalize October 10, 2011

Mushroom Stamp 

An imaginary outline left by slapping one’s magnum dong against the face of another.

If you gave Lady Gaga a mushroom stamp, you'd be using your dong to poker face.

Mushroom Stamp by Rationalize October 3, 2011