When passing a marijuana joint amongst friends, there will sometimes appear disruptions in the correct "chain of passing".
When this happens the person who is to pass the joint to the correct person, is allowed to take a puff of the joint as "toll" for sending it on to the correct person who's turn it actually is to smoke.
Q: "Dude it's not your turn, why are you smoking?"
A: "Chillax dude, i'm just taking a tollpuff."
Q: "Would you pass it on for me?"
A: "For sure - tollpuff!"