M-some - A group of five people where only one person is doing the de

A group of five people where only one person is doing the deed, and the other four are just there to make it look like a real party.

My M-some had five people, but only my cousin was actually having fun.

At the gym, it was an M-some, and only one person was actually working out.

My M-some had five people, and only one of them was actually doing the dirty work.