Thanks for not costing me any more, donkey...

It is a rare thing to see quads checked on the river, when your opponent has position on you. Particularly, I had taken two shots at a semi-bluff CERTAINLY NOT PUTTING HIM ON QUAD QUEENS OR A SET.

Full Tilt No-Limit Hold'em, $0.10 BB (7 handed) - Full-Tilt Converter Tool from http://www.flopturnriver.com

UTG ($2.56)
MP1 ($3.22)
MP2 ($2.51)
CO ($1.70)
Button ($6.03)
SB ($9.94)
Hero (BB) ($13.11)

Preflop: Hero is BB with 2s, 8d
4 folds, Button calls $0.10, SB calls $0.05, Hero checks

Flop: ($0.30) 4h, Qs, 2d (3 players)
SB checks, Hero bets $0.25, Button calls $0.25, 1 fold

Turn: ($0.80) Qh (2 players)
Hero bets $0.50, Button calls $0.50

River: ($1.80) 6s (2 players)
Hero checks, Button checks

Total pot: $1.80 | Rake: $0.12

Results:
Button had Qc, Qd (four of a kind, Queens).
Hero had 2s, 8d (two pair, Queens and twos).
Outcome: Button won $1.68