The Detroit Double-Reacharound is when you wrap your arm around your victim and hold them in place, then slowly but snugly slide your entire fist inside their anus and hold them like that.
And just as she climbed onto the bus headed home, the man behind her slid his arm under hers and gave her the ol' Detroit Double-Reacharound. Becky's ride home just got a lot comfier.
Double rainbow - when two guys cum over another guys face at the same time, hence crossing spunk streams - meaning to be double rainbowed.
"I really want a double rainbow tonight"
"Fancy a double rainbow?"
I really want to double rainbow him, are you up for it?"
You should have seen the double rainbow I got last night.
That was the best double rainbow I've ever had.