Top Definition
A poo that you take before you leave to go out to a party or on a night out, so that you won't need a shit later on.
Mike: I'm back, I was just having a safety poo, any of you guys need one? You can use my toilet..
Tom: No, I'm good, I had one before I came round.
Mike: Ben?
Ben: I tried but it just won't come out.
by mikethompson February 14, 2009
5 Words related to safety poo

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