BTN: $53.99 (216 bb)
Hero (SB): $42.51 (170 bb)
BB: $46.45 (185.8 bb) Unknown.
UTG: $25 (100 bb)
MP: $25.25 (101 bb)
CO: $25 (100 bb)
Preflop: Hero is SB with A♥ K♦
4 folds, Hero raises to $0.75, BB raises to $1.25, Hero raises to $3.50, BB raises to $46.45 and is all-in, Hero calls
Flop: ($85.02) 5♠ K♥ 4♦ (2 players, 2 are all-in)
Turn: ($85.02) 2♦ (2 players, 2 are all-in)
River: ($85.02) J♠ (2 players, 2 are all-in)
First of all I don't like this call at all, but at that moment I somehow thought he's not shoving his AA, KK being this deep (46$ onto my JUST 3.5$), so I made the call ... 
But that's not the point ! What is MORE interesting to me, is these scenarios:
1) He 5bets say to like $8.5 or smaller. Do we call being OOP ? Do we fold ?? 
2) Say he does 5bet and we call. What do we do then, hitting THIS flop ?? So DRY, and we have TPTK ... Although it is 5betpot already ... We check, and he starts barreling ... What's the plan ?? x/c all the way ? BUT is he barreling worse ?? I don't think so ... But if we called preflop, what did we expect to hit anyway ?? If we do not like THIS board, are there ANY boards at all we DO LIKE ?? I mean yeah, what's our general game plan in these kind of spots ?
He makes a small 5bet, we call, and the flop comes like this one, very dry, TPTK for us, and what is the game plan then ? x/c flop, and x/f on brick turn ?? x/c both, and x/f river ?? assuming he IS barreling ...