DSFL 

Deep Sea For Life ‘DSFL” is a term used by a Navy Master Divers. It is attained after receiving the title “deep sea” for the rare few that make it a career.

After 25 years of deep sea, that dude is definitely DSFL

DSFL by Firebetty May 8, 2023

DSFL 

Dick Sucker For Life

Dude: "Yo that chick is such a whore"
Brah: "Ya shes a DSFL."

DSFL by dhoops February 19, 2009