Shee-poo is a word or phrase that combines peeing and pooping together at the same time. In a common Singaporean childhood, young Singaporean kids will be asked to go to the toilet to shee-shee (which means urinating) or poo-poo (which means pooping obviously)

E.g ‘why did you take so long to use the toilet ? Is it because you were shee-pooing ?’
‘why did you take so long to use the toilet ? Is it because you were shee-pooing ?’
by Kanagroo_duck August 20, 2018
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