My own trick.

[Reaction]

So in party mode I go in a virus. I have to be bigger than the virus so I could be on top of it. So when a team comes, they try to kill me by splitting, killing me and exploding so they could give to their teammate. So, if you can, move fast away from the virus. The team guy will split and then you get the mass. But then don't risk it and go away.