Only read is that he has played 3 of the 4 hands I have seen at the table.

PokerStars Game #16617531020: 7 Card Stud Limit ($3/$6) - 2008/04/10 - 00:28:05 (ET)
Table 'Phthia' 8-max
Seat 1: Mannoman1351 ($104.75 in chips)
Seat 2: Juskimo ($199.75 in chips)
Seat 3: acro1 ($65.75 in chips)
Seat 4: Jigs=DnkFish ($113.50 in chips)
Seat 5: MilaN ($35.25 in chips)
Seat 6: jn1978 ($174 in chips)
Seat 7: race29-18 ($364.50 in chips)
Mannoman1351: posts the ante $0.25
Juskimo: posts the ante $0.25
acro1: posts the ante $0.25
Jigs=DnkFish: posts the ante $0.25
MilaN: posts the ante $0.25
jn1978: posts the ante $0.25
race29-18: posts the ante $0.25
*** 3rd STREET ***
Dealt to Mannoman1351
Dealt to Juskimo [Ac 3c 2c]
Dealt to acro1
Dealt to Jigs=DnkFish
Dealt to MilaN
Dealt to jn1978
Dealt to race29-18
Juskimo: brings in for $1
acro1: folds
Jigs=DnkFish: folds
MilaN: folds
jn1978: raises $2 to $3
race29-18: folds
Mannoman1351: raises $3 to $6
Juskimo: calls $5
jn1978: calls $3
*** 4th STREET ***
Dealt to Mannoman1351
Dealt to Juskimo [Ac 3c 2c]
Dealt to jn1978
Mannoman1351: bets $3
Juskimo: calls $3
jn1978: calls $3
*** 5th STREET ***
Dealt to Mannoman1351 [Ks 8h]
Dealt to Juskimo [Ac 3c 2c 4d]
Dealt to jn1978 [Jh 3h]
Mannoman1351: bets $6
Juskimo: raises $6 to $12
jn1978: folds
Mannoman1351: raises $6 to $18
Juskimo: raises $6 to $24
Betting is capped
Mannoman1351: calls $6
*** 6th STREET ***
Dealt to Mannoman1351 [Ks 8h Qd]
Dealt to Juskimo [Ac 3c 2c 4d 5d]
Mannoman1351: bets $6
Juskimo: calls $6
*** RIVER ***
Dealt to Juskimo [Ac 3c 2c 4d 5d 8d]
Mannoman1351: bets $6
Juskimo: calls $6
*** SHOW DOWN ***
Mannoman1351: shows [Kc Qs Ks 8h Qd 8s 6h] (two pair, Kings and Queens)
Juskimo: shows [Ac 3c 2c 4d 5d 8d 6d] (a straight, Deuce to Six)
Juskimo collected $97.75 from pot
*** SUMMARY ***
Total pot $100.75 | Rake $3
Seat 1: Mannoman1351 showed [Kc Qs Ks 8h Qd 8s 6h] and lost with two pair, Kings and Queens
Seat 2: Juskimo showed [Ac 3c 2c 4d 5d 8d 6d] and won ($97.75) with a straight, Deuce to Six
Seat 3: acro1 folded on the 3rd Street (didn't bet)
Seat 4: Jigs=DnkFish folded on the 3rd Street (didn't bet)
Seat 5: MilaN folded on the 3rd Street (didn't bet)
Seat 6: jn1978 folded on the 5th Street
Seat 7: race29-18 folded on the 3rd Street (didn't bet)

He's acting like he's rolled but htat is impossible with 2 kings dead by 6th. You catch an 8 so the chances of him having 888kk are slim, ditto 888qq or qqq88. He has nothing else on 6th that can beat you. I'd jam it.