Grody.

Know what's gross?
Like really, really gross?
Grosser than a hickey from Steven Tyler?
Grosser than Ron Jeremy nekkid?
Grosser than this guy?
Grosser than Jocelyn Wildenstien?

Okay...

You're driving home from work.
It's hot, despite the open window.
You're getting a little sticky.
You realize, damn- I am one funky mess!
However, you notice the lovely smell wafting from your pits, isn't your usual earthy musk.

It's then you realize that you probably forgot to wash the donated shirt you're wearing.
Other people's BO mixed in with your sweatiness.
Ew.