backwash chimney
When two people get close enough in a scissor like position to connect urethra to urethra forming one single unit. Some have even been known to swap the contents of their bladders.
Steve: "Tom what are those lesbians doing overthrew?:
Tom: "thats a yoga pose called the backwash chimney, we should try it sometime."
Tom: "thats a yoga pose called the backwash chimney, we should try it sometime."