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A german padlock is when a man inserts his penis into his own anus, thus resembling the locking mechanism on a padlock. This can only be performed with a rather flexible erection, long member and a german state of mind.
-I heard that Günter got lucky last night...

-Thats only partially true, that sick mofo performed a german padlock on himself!
by O-Dogggy May 15, 2008
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