Top Definition
When someone is doing something and you go up behind them and shake them vigorously while shouting, "CHALLENGE MODE!", causing them to totally screw up what they were doing.

It makes everything so much harder because it's challenge mode.
Katy was doing her homework when David came up and shook her shoulders crazily and shouted, "CHALLENGE MODE!!!!11!1111!!1!!!". Katy's homework was ruined because her pencil went all over the place.

Then Katy pwnd the nubcake.
by bullsunshine November 01, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

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

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt