for cereal

1) An inquisitive remark; a way of asking "are you for certain that what you are expressing right now is something that can be trusted?"
2) A confirmation of seriousness.
3) A deep and philosophical question, as in: "Are you sure that you are not dicking around right now?"
4) An exclamation.

1) Are you for cereal?
2) For cereal.
3) SUPER cereal?
4) Cereal!

for cereal

1) An inquisitive remark; a way of asking "are you for certain that what you are expressing right now is something that can be trusted?"
2) A confirmation of seriousness.
3) A deep and philosophical question, as in: "Are you sure that you are not f*cking around right now?"
4) An exclamation.

1) Are you for cereal?
2) For cereal.
3) SUPER cereal?
4) Cereal!