What is Upstairs Outsidies?
1.
feeling a girl's boobies (upstairs) from outside her shirt (outsidies)
it wasn't my fault- your mom made me go upstairs outsidies on her with force... i don't even want to say whut happened next
See
2.
To touch a girl's breasts(upstairs) but on the outside of the shirt(outsidies)
*Guy rubs hands on girls boobs while making out*
Girl: Wow, this is great upstairs outsidies.
Guy: Hell yea.
See