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A goal in futbol (or American Soccer) that is scored not off of skill, but by luck and/or freak circumstance.
*A ball is lightly kicked at the goalie, and goes through his legs for a goal*

Announcer: Oh no! Its a lopa-goal!

*A ball is deflected by a defender into his own goal*

Announcer: Oh my, another lopa-goal
by *xpac taunt* April 15, 2011
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