Player Error - Poker Ettiquite

[The Goober]

If he's a generally a nice guy, then I would let him simply call, but then I'd raise him and give him a "sorry to do it to you, but I gotta raise" line. I think that keeping things friendly can easily be worth 1 BB later on.

If the guy was a jerk (and not a loose passive jerk), or was over agressive and likely to spew a lot of chips if he went on tilt, I'd probably force him to raise and then cap it.

[PokerBob]

Let him take his money back. The most you gain is likely 1bet, and you make everybody think you're a great guy. IMO this is more +EV.