In Super Smash Bros. Brawl, or any Smash Bros. game, there comes a point where a Smasher can't smash at their best. Your moves become stiff and your reaction
time decreases.
(Derived from the term 'Writer's
Block', where a writer comes to a point where the mind boggles and cannot create any ideas for his/her stories)
Similar definitions: brawler's
block, fighter's block, cock block
P1: Dude, you
suck.
P2: Curse this damn Smasher's Block.
P1:
Right.
P2: I'ma get you when I can play
better.
P1: We'll see dude. We'll see.