What is Don't Wreck 'em/ Don't Wreck Your Genitals?
1.
refers to damaging your genitals through playful but violent activites Can be used with parting words, as a warning or to describe a lack of life experience.
"You are 25 and you have'nt wrecked 'em yet?"
(to someone play fighting)"Hey, careful you don't wreck your genitals."
"bye jay, don't wreck 'em!"
See