It's when you check when your friend has peed and pooed
You: when was the last time you took a shit

Timmy: yesterday
You: when was the last time you took a piss

Timmy: two hours ago

You: peepeepoopoo check complete! Thanks
Timmy: *stares at you like you have ten eyes*
by fourdefinitionperson January 24, 2021
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the peepeepoopoo check is a funny joke about a baby who makes peepeepoopoo haha funny and original
very peepeepoopoo check
by November 22, 2021
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