springback
In engineering, springback is the elastic recovery on a piece of metal when a force is removed - usually found in sheet metal bending, but also could apply to an erection which is pushed down and let go.
Dwight was experiencing some springback as he worked in the metal shop, so he put his pants back on and went back to sheet metal bending.
surprise springback
when someone is urinating with an erection and the basketball shorts they had pulled away involuntarily spring back and send urine flying in all directions onto the person.
Rusty- why does jeff have water spots all over his shirt?
Tyler- I think he had a surprise springback.
Rusty- hmm, definatley.
Tyler- I think he had a surprise springback.
Rusty- hmm, definatley.