I do it all the time with Wyrdo. I start a FFA match and then invite him to the game. Or he joins session in progress, theoretically you could do this with a few mates and gang up on others until they leave.
Although when Wyrdo and I play we take most pleasure from killing each other rather than boosting!
Nothing is better than ruining one of his streaks by either having him walk on a claymore you have planted in the middle of nowhere or shooting hiom when he's on the laptop calling in a streak
Its actually challenging because he knows all my camping spots!