When a man inserts one end of a hamster tunnel into his
asshole and the other end into the other male/females
asshole. Then letting off a huge
fart. Therefore sending his fart to the other person.
Toby:
Jake do you wanna shuttle again?
Jake: Oh yeah, shuttle me, baby.
Toby: Good because I've been holding in this huge fart all day just for you ;)
Jake: I
love shuttling with you Toby ;)