The area between an individual's penis shaft and scrotum. Often itches and is relieved through very accurate scratching.
Dude: Dude, I scratched my scronus for like 2 hours this morning
Other Dude: Dude! Mine itched for so long the other day! It felt awesome scratching it!
When ending intercourse, or felatio, a man taps the glans of his penis upon the lips of cheek of a female (or other man) and yells "Scroncho!" as he ejaculates.
A:Yo man, that chick looks busted.
B:I'd totally scroncho her though.
A:I did your mom last night eheuheueh
B:I scroncho'd your mom last night