Top definition
A person who isn't keen to light-hearted or fun jokes. More specifically, pranks.
I put rat poison in my boss' coffee and he got mad at me. What a Stiffly Stifferson.
by Jablonsky May 22, 2004
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