I tip 20% religiously.
At my favorite restaraunt it will sometimes goto 25%
I'm generally treated like a king anywhere I'm known.
Most of you arguing over a few percentage points on your hundred dollar meal are borish and cheap.
Those of you from outside the US wouldn't know good service if it bit you on the ass.
Yes, put the 5 extra bucks in your pocket, it means so much more to you than the people working to make you happy.
