If you have sex with the same girl as your friend has. You two have now been double tunneling. And now you are tunneling buddies.
by dsteffens April 28, 2016
“Bro! Are you my double tunnel buddy?”
“Don’t even tell me you double tunneled with that Lindsay chick, bro”
“Don’t even tell me you double tunneled with that Lindsay chick, bro”
by BuffyTheManSlayer September 16, 2018