This is the term most commonly used to describe the act of swiftly pulling your penis out of your partners rectum, thus causing the inner tissue to "bloom" outward; producing what appears to be a flesh colored flower blooming from the anus
How was your time in prison?
It wasn't too bad except for the day Bubba gave me a blooming flower after dropping the soap.
Similar to fisting, it is the act of putting your hand in the shape of a duck bill (like you would if doing a shadow puppet.) You then slip the hand into the vagina until you reach as far as you can go. Once you are there, you open your hand and wiggle your fingers.