Verb - to end a relationship with a girl and then to instantly regret the decision, fancy your ex and follow her round like a lost puppy.
"John, did you break up with Cindy last night?
"Yeah, but i think i did a wiesy."
by chumi July 28, 2009
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The technique of simultaneously defecating in each others face used by two homosexuell man. Often practiced under the influence of poppers.
Philipp: Hey Christoph, what did you do yesterday?

Christoph: You can´t remember!? We did that Wiesi and Jizzy thing all night long toghether. I still have some bits between my teeth.
Philipp: Trudy, now I remember. Must be the poppers. They make my always a bit confused the day after.
Christoph: Talking about after. Wanna do a Wiesi and Jizzy tonight?
Philipp: Sure. I´ll bring the Poppers.
by BiscottiWiscotti March 15, 2018
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