It could be your bike. EDIT: Spelling.
the floor
The Bannisters
I don't know but I'll join in if it laughs !
Laughing stock. What do you call a grumpy cow? A Feminist
The bench can support a family of four.
His cousin with the DVD player
Cleaver! EDIT: Also Sharp, knew about this one but I like Cleaver better.
He finishes her drink EDIT: Apparently this is Conan's joke, so all credit goes to him. I just heard it from a friend of mine and I had no idea.
Bee.
Because the US gave the UK that L back in 1776.
Lets go ride our bikes
Take his bike away.