Top Definition
You place your balls in someone's mouth as they tickle it with your teeth, you usually do this whilst roughly masturbating the other person so it is harder for them to keep their mouth open.
Wanna do a German clockwork tonight?

ok, as long as you're less rough.

sure thing sweet cheeks *puts his middle finger to his lips*
by FGIHM April 12, 2014
5 Words related to german clockwork

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