The term used when describing a series of cutting remarks made at one person by another person or group of other people.
Tom: You like this shirt?
Jack: If you are trying to dress like a senior citizen, then Yes, it looks great.
Jan: Looks like you gained a few pounds just around the belly too, Tom.
Jack: If your definition of belly is his whole body, then I agree with you Jan.
Tom: Geez guys.. can you quit with the cutfest!!