Holiday that comes once a year on October 31 that is celebrated by a woman performing oral sex on her partner until completion.
Most people celebrate Halloween on October 31, but in my house it's called Swalloween and I enjoy the day more than I would by eating some candy!
by Holdin Macgroin October 10, 2008
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Celebrated day of atonement for MILFS which parallels 'Halloween'.

Offsets Windows 10 issues, and lends credence to the value of good head.

Based on totally human API.
Last Swalloween, that chick from Oracle ran the house...the database is drained of errors now.

My MILF neighbor goes pro on Swalloween., and I like it.
by s6's brother October 20, 2021
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An annual gathering (in October), where 40 year old Pennsylvanian whiteys, who grew up in the suburbs, yet thought they were “gangsta”, drive/fly in from all over, to celebrate their friendship & relive their youth, by listening to 90s music, drinkin’ 40s, having politically incorrect conversations, eating, dancing, playing Cards Against Humanity, performing “personal joke” skits (which make fun of each other), & consuming A LOT of alcohol. These fools have their own Facebook & Snapchat groups, called “40s & Shortys”, which they watch the next morning, to be reminded of what exactly went down the night before. On occasion, they also try to gather for a Spring version of these festivities, called “Spitoween”.
Who’s grabbin’ the 40 for Swalloween?
by Sinister C October 14, 2018
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