Everest. Any time he is bored I see him Mount Everest.
Mooooooo
The NaaaaayyyVY
Nothing, you can't cross a vector by a scalar. EDIT: changed multiply to cross.
Yoda-ling
Have a rest. (Everest, get it?) Really awful joke, but I thought of it last night and was wondering if anyone recognised it? Who knows, it might be original....