Well people with deep stacks close to the bubble will throw their chips out there to steal blinds from short stacks trying to make the money to boost their chip stacks.
If it was just one shover who was already going about the business of stealing blinds it might of been worth it to call if the cards had been going your way most of the tournament.
But with 2 others calling your chances of winning drop off a little so being on the bubble I would have probably folded unless I had the biggest stack of the people all in.