Two guys that have slept with the same women.
Those two guys are tunnel buddies.
12π 5π
When you and a buddie use the same hole on a girl he's your tunnel buddie
Like billy is my tunnel buddie
6π 2π
When two gay men share a chronic addiction to anal fornication. Habituation of anal sex will eventually scar one's anus, marking one as a permanent "Tunnel-buddy."
"Oi, faggot, I heard you were officially labeled as a Tunnel-buddy by Anderson Cooper."
23π 94π
When you and your bro have both taken down the same chick via both tunnels (vaginally and anally).
βBro! Are you my double tunnel buddy?β
βDonβt even tell me you double tunneled with that Lindsay chick, broβ
2π 1π
If your friend has a girlfriend, and his girlfriend slept with his sister, and you sleep with his sister. you are now Bluetooth Tunnel Buddies with your friend
hey you know my buddy matt? I am his Bluetooth Tunnel Buddy