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Stealing onions from a McDonald's burger and shoving them up your lover's butt so you can pull them out like a gross prize.
I just did maccedunions at the drive-thru and my date is never eating onions again.
My mom caught me doing maccedunions in the park. She said I was 'disgusting and a little cute.'
He tried to sneak onions up my butt at the mall. I called him out and now he’s a legend.