I've gotten folds on this exact move a few times online. Huge pot, I miss completely with ultra-low cards, but throw in my last 3BB, consisting of less than 5% of the pot. Villain folds, maybe 1 in 10 times? I don't know if he's thinking that I must be expecting a call, or just folding to avoid the embarassment of revealing that he just chased middle pair all that way. Who knows? At any rate, thanks for being that guy on the other end.