Used when deciding who starts a joint. To have Roller's rights implies that you have the right to start the joint because you rolled it.

one "calls" poke when he/she wants to be second in a joint circle.

One calls "Double Poke" when they want to be third in line of a smoking circle. it is usually said after poke gets called.

One "calls" tag if they want to be fourth in a smoking circle. It is usually said after poke and double poke have been called respectively.