1-2 at MGM Grande...preflop question

[TylerD]

Very fishy 5 a.m. 1-2 NL game at MGM Grande. Stoner girl with huge stack (and rack coincidentally) limps UTG, stoner's boyfriend who appears to be sober and appears to play OK (much better than his crazy girlfriend) also limps. I raise to $15 with JJ in MP. Everyone folds to stoner who calls, stoner's boyfriend then raises all-in for about $300. I have $250 left after the raise. Anyone call?