排 eliminate

Do Japanese eliminate foreigners sometimes? HAI!

If an injustice comes your way, raise up your hand to eliminate it and keep it out.

to remove or eliminate ★★★☆☆
排 (eliminate) + 除 (exclude) = 排除 (to remove or eliminate )

defecate ☆☆☆☆☆ NP
排 (eliminate) + 便 (convenient　/ poop) = 排便 (defecate)

the dook (doctor word, although it's sure to get a chuckle if you use it)

to pee/poo ☆☆☆☆☆ NP

to eliminate (another doctor word, which could mean poo OR pee, which is what is so excellent about it) (especially if you speak almost no Japanese but know really advanced medical terms for turd dropping)