Top Definition
The term used to describe someone who has the innate ability to topple a bandwagon that previously had a great deal of momentum behind it. In other words, a bandwagon jumper who causes the team to lose or the bandwagon to crash.
Brock Lesnar became UFC champion after four fights. After a successful title defense, he gained one too many fans - the one with Grunskyism came on board. Brock immediately lost the belt and hasn't been seen in the UFC since.

The Vancouver Canucks were having an amazing playoff run. They seemed unstoppable and made it to the Stanley Cup Finals.. Then that guy hopped on the Canucks bandwagon. He has Grunskyism and within a week, the Canucks fell apart, lost the finals, and Vancouver rioted. Grunskyism.
by G-ism October 20, 2011

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
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×