To engage in sexual intercourse, especially that of the slurpy variety,resulting in a sound deliciously similar to stirring up a hot pot of creamy mac n cheese
Did you hear those kids making Mac in the carnext to us last night
When Santa is too fat for your chimney and he gets stuck so you pull out his tiny dick and start jerking him off all night.
Kim: Santa's stuck in my chimney!
Santa: help!
Kim: *pulls down santas pants*
Santa: wha- what are you doing?
Kim: oh nothing, just milking the Santa!
Santa: oh god!