When you pay a Gentleman of Significant Stature (a fatty) the sum of $35 to spread the cheeks of his buttocks, sit on your face and flatulate. The act becomes a Filthy Marshmallow if the large man defecates, intentionally or otherwise.

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)

a girl takes a good amount of marshmallows and puts them in her mouth while giving you a blow job

1. When a money shot gets covered with sand and left for others to find at the beach

2. When someone gives a facial and shoves the girls face in the sand (well complimented by the Amish Plow)

When a man has an infection in his penis and and cums on your stomach.