when one loves the smell of their farts yet doesn't want (or is too lazy) to fart and then lean over to smell the area that they farted in. Instead, they can make a cup out of their hand and fart into it, close the "cup", and bring it to their nose, where they can open it and sniff.
That person loves their farts. Dude, they are the master of the cup and sniff.
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