I see all-in calls on the flop with low pairs in reraised HU pots all the time, but used to think it's a pretty donkish play. Yesterday witnessed the same while watching a HS HU game.

Is this standard play in loose HU games?

I usually don't make these calls, but perhaps I should give them more consideration? Pot odds are pretty decent here, but not even close to correct against a higher pair.

Dealt to BB [ 7C,9D ]

Ongame Texas Hold'em $100-$100 NL (Real Money)
Table Isfahan, 3 Jun 2007 8:38 PM ET

Seat 3: BB ($9,799 in chips)
Seat 7: BUTTON ($16,361.05 in chips)

ANTES/BLINDS
BUTTON posts blind ($50), BB posts blind ($100).

PRE-FLOP
BUTTON bets $300, BB bets $1,250, BUTTON calls $1,000.

FLOP [board cards 8H,3D,7H ]
BB bets $2,100, BUTTON bets $15,011.05 and is all-in,
BB calls $6,349 and is all-in.