whatever, man. yes, his line is very suspicious, and maybe his range is indeed precisely quads only, but sometimes you just have to suck it.
in the end, i'd also get stacked, but i wouldn't think much about it. this spot is so rare, it's definitely not going to make or break your poker career.
i have done - and still do - some real fucking dumb shit, and yet i am still a solid winner:
Spoiler
PokerStars - $0.16 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
BTN: 146.25 BB (VPIP: 23.53, PFR: 17.83, 3Bet Preflop: 7.51, Hands: 554)
SB: 108.13 BB (VPIP: 23.73, PFR: 18.25, 3Bet Preflop: 5.03, Hands: 970)
Hero (BB): 389.31 BB
UTG: 269.13 BB (VPIP: 21.67, PFR: 17.88, 3Bet Preflop: 8.19, Hands: 1,061)
MP: 67.69 BB (VPIP: 56.57, PFR: 5.05, 3Bet Preflop: 2.04, Hands: 102)
CO: 100 BB (VPIP: 21.43, PFR: 21.43, 3Bet Preflop: 20.00, Hands: 15)
SB posts SB 0.5 BB, Hero posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has K♦ A♥
UTG raises to 2.25 BB, MP calls 2.25 BB, fold, fold, fold, Hero raises to 11.5 BB, UTG calls 9.25 BB, MP calls 9.25 BB
Flop: (35 BB, 3 players) A♦ A♣ 4♠
Hero checks, UTG bets 9.5 BB, MP raises to 56.19 BB and is all-in, Hero calls 56.19 BB, UTG calls 46.69 BB
Turn: (203.56 BB, 3 players) 2♥
Hero checks, UTG bets 66.06 BB, Hero raises to 321.63 BB and is all-in, UTG calls 135.38 BB and is all-in
River: (606.44 BB, 3 players) 9♥
Hero shows K♦ A♥ (Three of a Kind, Aces)
Main Pot [203.56 BB]: (Pre 25%, Flop 16%, Turn 12%)
Side Pot#1 [402.88 BB]: (Pre 37%, Flop 16%, Turn 12%)
UTG shows 4♦ 4♥ (Full House, Fours full of Aces)
Main Pot [203.56 BB]: (Pre 20%, Flop 84%, Turn 88%)
Side Pot#1 [402.88 BB]: (Pre 63%, Flop 84%, Turn 88%)
MP shows K♠ K♥ (Two Pair, Aces and Kings)
Main Pot [203.56 BB]: (Pre 55%, Flop 0%, Turn 0%)
UTG wins 597.06 BB
PokerStars - $0.16 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
BTN: 100 BB (VPIP: 13.91, PFR: 10.15, 3Bet Preflop: 6.80, Hands: 267)
SB: 125.5 BB (VPIP: 14.00, PFR: 10.67, 3Bet Preflop: 3.08, Hands: 152)
BB: 116.44 BB (VPIP: 26.70, PFR: 22.73, 3Bet Preflop: 13.64, Hands: 179)
UTG: 231.63 BB (VPIP: 73.68, PFR: 47.37, 3Bet Preflop: 20.00, Hands: 19)
Hero (MP): 283.38 BB
CO: 125 BB (VPIP: 22.06, PFR: 16.27, 3Bet Preflop: 7.12, Hands: 771)
SB posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has K♦ A♦
UTG raises to 3.5 BB, Hero raises to 12 BB, fold, fold, fold, fold, UTG calls 8.5 BB
Flop: (25.5 BB, 2 players) A♣ 4♣ 2♣
UTG bets 24.38 BB, Hero calls 24.38 BB
Turn: (74.25 BB, 2 players) 6♦
UTG bets 70.94 BB, Hero raises to 247 BB and is all-in, UTG calls 124.31 BB and is all-in
River: (464.75 BB, 2 players) T♥
UTG shows T♣ 7♣ (Flush, Ace High)
(Pre 37%, Flop 97%, Turn 100%)
Hero shows K♦ A♦ (One Pair, Aces)
(Pre 63%, Flop 3%, Turn 0%)
UTG wins 455.38 BB
don't ask me what i was thinking, i'm not sure myself.
big mistakes burning some deep stacks! and yet, life goes on. don't beat yourself up over a hand that's not even a blunder.