Thinking on your feet refers to being able "to remain cool and confident under pressure." In other words, to have the ability to think quickly under pressure/stressful situations. (Taken from english-test.net)
1: The most hilarious line ever spoken in King of the Hill. Hank Hill said this in Episode 10 of Season 1. Why was it so great? Well first, can you picture Hank Hill using a blender? Second, a blender is not something you can just leave on, because it's only on when you hold down the button.
2: A bizarre excuse to step outside for a cigarette when you don't want people to know you smoke.
*Hank and Peggy are in bed.*
HANK: Uh, I got to go do some stuff. I think I might have left the blender turned on.
*Hank gets out of bed, goes outside, and lights up a cigarette.*
Those groups of adolescent kids mainly aging from around the ages of 11-14 in groups of 6 or 7 who randomly pick on those who look a little bit different from the widely accepted norm
Thugs: Hey You
Normal Person: What
Thugs: Your a f**king idiot mate
Normal Person: Yeah whatever
Thugs: Did you say something
Normal Person: No
Thugs: You better not have otherwise we're going to batter you up init