When you're smashing someone from behind and they then proceed to shit all over your dick with a putrid amount of diarrhea shit which fills the air around you as you inhale the glorious fumes of your girl, you feel at peace and one with nature.
A loved one who constantly farts in bed and will not waft after the crime has been committed. They also insist on curling a banger when you are in the shower and feel obliged to exhibit their star between their cheeks on a daily basis.
When you are having sex "doggy style" and all of a sudden you smell something (if one the people had not wipped themselves very well..) that smell is hoobastank