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!"
When some resigns or retires from a job, they are on "eternity leave". This can also refer to someone who has passed away, especially someone who worked somewhere for a long time, retired/resigned, then passed away later.
Oh I'm sorry, you didn't know that Kelly is on eternity leave? She resigned and moved to Hawaii!
With regrets I would like to inform you that my boss is officially on eternity leave. I will never see or hear them again. Ever.