I left a tip once... It read.. next time serve someone else.

It varies
 

For good service 20%

Average service 15%

Bad service.... complaint to manager and no tip.

Extra great service with some healthy cleavage thrown in (my face) more than 20% :p

Very Poor and food sucks: no pay bill and never return there

Sounds right:

15% average service

20% above average service

25%++ for a hottie waitress that keeps asking me if there is ANYTHING she get for me. :D

-1000% for the hospital bill after my wife hits me in the head with the frying pan. :P

Never left no tip (even when I was a poor college student).

Never been to a Hooters before (really). Worth the hospital bill, or ?? ;)