Just switched to Full Tilt from a 200BB site, trying to adjust to 100BB.

BB was 25/15 something. Did I play the hand like a donkey?

Full Tilt No-Limit Hold'em, $0.25 BB (5 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

SB ($1.11)
BB ($27.16)
UTG ($30.22)
Hero (MP) ($29.64)
Button ($25)

Preflop: Hero is MP with K, A
1 fold, Hero bets $1, 2 folds, BB raises to $3, Hero calls $2

Flop: ($6.10) A, 8, 5 (2 players)
BB bets $4, Hero raises to $26.64 (All-In), BB calls $20.16 (All-In)

Turn: ($54.42) 5 (2 players, 2 all-in)

River: ($54.42) K (2 players, 2 all-in)

Total pot: $54.42 | Rake: $2.72

Results: (in white below)
BB had 5, 5 (four of a kind, fives).
Hero had K, A (two pair, Aces and Kings).
Outcome: BB won $51.70