This phrase is used as a hyperbole to exaggerate a specific objective or pervasive idea. This can also be used as a sexual phrase. First popularized by Dr. Fiedler, it is a widely used phrase amongst the teenage age group, both appropriately and inappropriately.
1: Bro! Did you see my hit!
2: Yeah, you really went for the whole enchilada.
Boy: Did you hear about that kid who got expelled for yelling racial slurs?
Girl: Yeah, I did. He went crazy on the whole enchilada!
B1: Last night, my girl took the whole enchilada.
B2: Cool™ dude!
B3: I'm sure there wasn't much for her to take, man.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.