3 Aces, 3-way pot

[1957 Chevy]

Playing live 2-2 NL with a $100 cap buy-in. Table is loose-passive and fairly str8 forward, but raise pf with premium hands (AJ being the cutoff for what is considered a premium hand at that table). Average stack is about $200, and I have $140 or so.

Three limpers and I raise to $8 in Late Postition with A9os. 4 to the flop.

Flop: AA6 (rainbow)

SB (who is drunk and a bit wild) bets out $10. Player in MP calls. Other player folds. And I .... ?

If call, what do I do against a bigger bet and a call on the turn?

Tell me what I already know 2+2 (but please explain reasoning). Thx.