A water tube that has been used in salt water.
"Can't wait to ride on the salty donut this weekend!"
by yumsaltydonutsgrl July 06, 2009
1 more definition
A Salty Donut is a piece of shit that comes from the ass of a homosexual that has been repeatedly poked and filled with man jam.
Hey Nathen hun that felt great. l think if i hurry and push one out the cream will still be warm and we can share a nice fresh salty donut.
by Booboo1111 June 20, 2006