"Dude! I totally saw her downstairs from under that skirt!"

Can I go downstairs?
My downstairs is tingling.
I want to kiss you downstairs.

J Nasty: Don't tell Meg I told you, but she totally showed me her downstairs.
Caitlin: OH!

Five minutes later:
Caitlin: So, Meg. I heard you showed J Nasty your "downstairs"?
Meg: *laughs hysterically*

I wanted popcorn, so I went downstairs

Wow! Look at Susan, she is really lying downstairs!

Her downstairs mustache was so dirty it had a whole ecosystem living in it.

Mike wasn't digging Jen, but three beers later he was thinking with his downstairs brain. Now he has herpes.