8
1) The Universe's equal and opposite reaction to Jack Black, in accordance with Newton's Laws of Motion.

2) New British slang meaning "to defecate".
1) Actual A Level Physics question from Specimen Paper:
"Name a particle-anti-particle pair?"
Accepted answers:
Positron and electron
Muon and anti-muon
Jack Black and Jack White

2) "Outta my way, I need a Jack White!"
by Bailey89 May 02, 2006
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
9
"Man ! those white stripes are a fucking joke. Total jack white."
by Drewbud315 July 06, 2007
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