big draw, crazy action, confusion

My first hand post. Have appreciated reading here.

Villain 44/24/47, 75 hands.
How is this reasoning and flop action: Villains range: club connectors, club broadways, big single club (A-Q), 77, 55-44?

Full Tilt No-Limit Hold'em, $0.50 BB (6 handed) -

Hero (MP) ($129.90)
CO ($74.15)
Button ($50)
SB ($120.55)
BB ($68.15)
UTG ($222.85)

Preflop: Hero is MP with 66 (club)
UTG bets $1.75, Hero calls $1.75, 3 folds, BB calls $1.25

Flop: ($5.50) 4, 5, 7 clubs (3 players)
BB checks, UTG bets $4.55, Hero raises to $19.15, BB raises to $66.40 (All-In), 1 fold, Hero calls $47.25, getting 2:1

(wouldn't let me use the hand converter/url)

Fine.