Because the quark had a strange flavour
Quark! Quark!
Quark!
Quark.
You matter.
Peter Parker can shoot webs. Clark Kent.
Do you want to be in my Crib Tonight (Kryptonite)
It was time to split.
The banana gets in the way. Banana split
Because they're no laughing matter.
Because they make up an awful lot of stuff. EDIT: Because I forgot about neutrinos.
It doesn't matter - any old plaice will do.
Because inertia is a property of matter.
Steven Hawking with a brake failure!
Only one. They just hold it still and wait for the world to revolve around them.
Don't do it! You have potential!
Because m = AIt
Quark Quark
Pluck a duck.