domino
A "domino" is when you and a friend are getting blow jobs from black chicks, right next to each other, from a standing position, this is a race to see who can: 1)get off first and splooge on the girls chest, 2) count the number of white cum drops, and finally 3) push their girl over into the other one making it look like two dominoes falling over (the more players, the merrier)
"Dude, we totally dominoed these two chicks last night."