Or even 1 baht, 5 baht 10 baht coins?
Personally, I always go for the 25 and 50 satangers. I try to do it in an obvious and exaggerated way in the hopes of drawing the ire of Thais.
And then, as they sneer at me as if to say "cheap farang," I hold up the coin and yell:
"KOW BPEN KRAI? You think it's respectful to leave him face down on the dirty fucking ground!"
However, usually it doesn't come to that.