I need a very very good prank......help!!!!!!!!!!?

put vaseline on her door knobs and/or empty her shampoo/conditioner bottle and replace with lotion, unless you want to be meaner and use Elmer's glue instead of lotion lol

Lame but funny the whipcream and feather trick im guessing u no that 1 orstick her hand in warm water while shes sleeping. Shell pee her pants not to mean but halarious

Take her bungee jumping from really high up.

Just as shes about to jump, say 'oh wait a minute'

:L:L:L:L

or

Take her on a roller-coaster and just before you go on the ride take a screw on with you. when its going say to her 'oooh, where did this come from?'

:L

Saran wrap over the bowl of the toilet.....

The rest is self explanatory.

If she blow drys her hair put baby powder in the blow dryer. Funny as hell.

simple pie in face :P