A nocturnal event similer to a wet dream wherein the subject usually wakes to discover a drool covered pillow or, in extreme cases, a shredded pillow. The subject often describes dreams of eating marshmallows or other puffy white objects. Known causes of marshmallow dreams are:

Not eating enough before bed.
Eating too much before bed.
Eating strange things before bed. Example: Chili, Bratwurst and peach pie.
Repressed food fetish.
Psychological disorders.

Unless the occurence of such dreams becomes frequent though, there is no cause for alarm.