tell me about your favorite waterproof eyeliner

[buttercrumble]

Just that really is pen or pencil better, and do you apply to your waterline....

Bobbi Brown gel eyeliner, applied with a brush. It beats all others hands down.

MAC Liquilast liquid eyeliner. Doesn't come off except following nuclear winter. That may be good or bad depending on your need to wear it 24/7 (like me).