A means of conveying annoyance or anger towards an action or person
Example 1:

Megan your sissoning me! You can’t go to Cole’s today.

Example 2:

Sisson! Put your sunscreen on!!
by Meganandcoleforever December 12, 2022
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Sororal nephew.
Hey, it's my sisson Grayson.
by Master of beargreen August 25, 2023
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A guy who is mainly seen as a fuck - boy and tries to get with all the girls. He uses pick up lines on girls thinking it will make him have an advantage when really he is getting nowhere. Plays around with girl's hearts just to break them. Not a good boyfriend and horrible at kissing.
A girl that Tom was talking to - OMFG honestly, this guy is honestly such a player

Other girls - yep I know, that's Tom Sissons for you
by Theasapgirlboy March 31, 2020
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