Do you ever..

[wackjob]

I do this semi-frequently. Typically if I flop a set or two pair and I know the PFR will raise me on the flop I will donk. I will then c/r the turn. It is all very opponent specific, however. There are a lot of idiots at 10/20 & 15/30 who will get sucked in on this play time and again allowing me to get a raise both on the flop and the turn.