Home Girl's Vagina, meant as a reference to a very bad musty odor similiar to that of a unsanitary girl's vagina.
Hey dude! You smell like (HGV)home girl's vagina!
A heavy goods vehicle is a term used almost exclusively in Europe and Britain to describe trucks or lorries that carry a weight of more than 3.500 kilograms. (for you Americans that might not be able to claculate that is 7,716lb)
Can also mean Hepatitis G Virus
"Dude, check out that massive HGV !"
"Despite the fact my mother being only a little bit overweight, those jokes were already out of fashion when you started making them"
"No need to hurt my feelings man."