Top Definition
When a person makes plans and doesn't show up or does not follow through with the plans, they flop. This person becomes a flopmaster after not following through on a consistent level.
Alex: Hey man! I'm coming to visit you in three weeks!
Brandon: Okay, sweet!

*3 weeks later*

Alex: Yaaaaa. My mom said I have to work.
Brandon: Flopmaster.
von Sun-Maid Raisins 21. September 2012

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A male that is the master of making things floppy (loose) during intercourse.
Tom: "Who dated Susan last?"

Jim: "Larry did why?"

Tom: "She was so loose last night. Larry must be the flopmaster!"
von Tile 17. November 2007

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