the sticky residue that accrues on your soap when it has been left sitting in water overnight.
Awww man! I left the soap in the shower last night and now it's covered in soap cum!
by Geoff Conklin January 25, 2008
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When you get out of the shower after forgetting to rinse your ears hence leaving the “soap cum” in your ear
Alex: “bro i’ll be right back I got soap cum in my ear

David: “ah bro that sucks
by JonTronShow Official May 4, 2022
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