Slang for a one night stand that starts and ends while it's still dark out.
I met this hot broad at a bar. Within ten minutes, we were back at my place, passing the gravy. Her clothes barely hit the floor before we were done and she was back out the door. Now that's what we call a flash-bang.
a state of mind in which someone says or does something that hurts you deeply and then they mysteriously disappear into the night. Derived from jon demenkov.
‘ah here bi, jon put her on some jonder bang earlier, she was in an awful state‘