I have a base-line tip (10%) and that goes up depending on how good the service is. I've only left no tip a few times and half of them were because I went with a group and someone else picked up the tip. The other times... Well, sometimes service isn't just bad, it's insulting.
![[Image: SigBarSping_zpscd7e35e1.png]](https://images.weserv.nl/?url=i169.photobucket.com%2Falbums%2Fu224%2FUchiha_Kina%2FTags%2FSigBarSping_zpscd7e35e1.png)