Just Weird

I was totally bamboozled by the villain in this hand. Not sure if he is trying to rep a flush on the river or value bet his TP or if he is just randomly clicking buttons...

Poker Stars, $0.25/$0.50, $0.10 ante No Limit Hold'em Cash, 8 Players

CO: $50.50 (101 bb)
Hero (BTN): $151.49 (303 bb)
SB: $79.61 (159.2 bb)
BB: $116.83 (233.7 bb)
UTG+2: $148.15 (296.3 bb)
MP1: $106.53 (213.1 bb)
MP2: $119.56 (239.1 bb)
MP3: $129.24 (258.5 bb)

Preflop: Hero is BTN with 4 4
UTG+2 folds, MP1 raises to $2, 3 folds, Hero calls $2, SB folds, BB calls $1.50

Flop: ($7.05) 9 K 4 (3 players)
BB bets $1, MP1 folds, Hero raises to $6.41, BB calls $5.41

Turn: ($19.87) 8 (2 players)
BB bets $2, Hero raises to $16.25, BB calls $14.25

River: ($52.37) 2 (2 players)
BB bets $4, Hero raises to $29.97, BB raises to $55.94, Hero calls $25.97

Results: $164.25 pot ($2.50 rake)
Final Board: 9 K 4 8 2
Hero showed 4 4 and won $161.75 ($81.05 net)
BB showed Q K and lost (-$80.70 net)