Really Weird Preflop Spot

[PokerBob]

Live 30/60 game that is currently playing 5-handed, as there are new players coming in and others walking. 2 new players sit down, and they post utg and utg+1. They are both fish, and check their options. The button, who I have never seen before but can assume is an idiot because (a) well, Vehn told me to assume everyone is an idiot until shown otherwise and (b) he is wearing sunglasses, now raises. I am in the SB (2/3) with ATo. What do I do? (It should be noted that BB is a total loose fish as well.)