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A penis that has a slightly square shape to it. Almost Lego shaped.
Casey: OMG Sarah, did you get together with Mike last night?
Sarah: Yeah, we totally got it on, but he was totally erectangular.
Casey: OMG that sucks
Sarah: Yeah, I don't think I'm going to see hm again.
by LoLo42313 February 27, 2015
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