obserb - When you're jacking off and watching someone else jack off,

When you're jacking off and watching someone else jack off, and they're watching you jack off, all at the same time.

I was obserb-ing my friend and he was obserb-ing me.

I was obserb-ing my crush and they were obserb-ing me.

I was obserb-ing myself and I was obserb-ing myself.