Sickest Call I've seen

[JDMcNugent7]

This has got to be the sickest call I've ever actually seen happen while I was watching.
How can you have that good of a read?

FullTiltPoker Game #1875466122: Table Canfield (6 max) - $200/$400 - No Limit Hold'em - 1:21:47 ET - 2007/02/26
Seat 4: The Gift of Gab ($43,847.50)
Seat 5: durrrr ($59,794.50)
durrrr posts the small blind of $200
The Gift of Gab posts the big blind of $400
The button is in seat #5
*** HOLE CARDS ***
durrrr raises to $1,200
The Gift of Gab calls $800
*** FLOP *** [2c 4s Ah]
The Gift of Gab checks
durrrr bets $2,050
The Gift of Gab raises to $7,200
durrrr calls $5,150
*** TURN *** [2c 4s Ah] [9d]
The Gift of Gab bets $13,000
durrrr calls $13,000
*** RIVER *** [2c 4s Ah 9d] [Qd]
The Gift of Gab bets $22,447.50, and is all in
durrrr has 15 seconds left to act
durrrr calls $22,447.50
*** SHOW DOWN ***
The Gift of Gab shows [Td Js] (Ace Queen high)
durrrr shows [4h 5h] (a pair of Fours)
durrrr wins the pot ($87,694.50) with a pair of Fours
The Gift of Gab is sitting out
*** SUMMARY ***
Total pot $87,695 | Rake $0.50
Board: [2c 4s Ah 9d Qd]
Seat 4: The Gift of Gab (big blind) showed [Td Js] and lost with Ace Queen high
Seat 5: durrrr (small blind) showed [4h 5h] and won ($87,694.50) with a pair of Fours