Traindini
When 2 or more of the “boys” run train on a female. However, there is a twist. The goal here is to get though as many “boys” as possible before she realizes she is getting railed by different people. Each “boy” shall have 25 seconds each.
I once ran traindini on this girl in college with 9 of my boys. I was number 4 when she said “why did it get so small did you cum already!” Needless to say that traindini was unsuccessful.