An abbreviation of "It Will" usually used in Instant Messaging Conversations;
Person 1: It won't rain tomorrow!
Person 2: Twill!
by Treviie2 November 29, 2009
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To rim a very unpleasant ass for a small fee
I'm not saying I would enjoy having to twill Phil, but £20 is £20
by Twillmaster1 October 9, 2017
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Similar to chugnuts, twillings are the loose discrete lumps of faecal matter which entwine themselves to the hairs covering the perineum and peri-anal region of the male body.

They can, if sufficiently aged, absorb gaseous contents of the rectum (fart), slowly released when the underwear are removed: for example, when another person removes them for the purposes of fellatio or rimming.
"Fletch babes, your twillings are storing your arse stank"

"Mate I had to use four baby wipes and a pincer grip to remove some killer twillings"
by clunge-magnet October 9, 2008
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it will
Her: Is it going to rain today?
Him: Twill!
by EMoo12 August 7, 2022
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