Compensation, Compensate
You give a bunch of shellfish to a clown as compensation. The clown did you some favors, and everyone knows clowns only accept shellfish as a form of currency. So your compensation is a pile of random shellfish.
Picture the shellfish in your hands. Imagine handing them over to the clown as compensation for the unspeakable acts you had him do for you.
ばい
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Once the clown has been properly compensated, he looks you in the eyes, one hand full of shellfish, the other in the air, and waves, "Bye (ばい)" he says. "Bye, bye."
All you have to do is give him the right amount of compensation and you'll hear his sweet "bye, bye." Then you never have to see him again.