expression
when you've got to go, you've got to go; farts and boils aren't choosy about where they appear
A proverb meaning that bodily urges (like farting or boils appearing) cannot be controlled or delayed, and will happen regardless of time or place. Often used humorously.
会議中にお腹が痛くなって、「出物腫れ物所嫌わず」と言って席を立った。
My stomach started hurting during the meeting, so I said 'when you've got to go, you've got to go' and left my seat.
A traditional Japanese proverb. 出物 (demono) refers to farts or excrement, 腫れ物 (haremono) refers to boils or swellings, and 所嫌わず (tokoro kirawazu) means 'without choosing a place'. The phrase literally means 'farts and boils don't choose their place', humorously expressing that bodily functions are uncontrollable.