"Troon out" has a wiktionary entry

from there:

Etymology 1​

From a 1999 Simpsons episode, "E-I-E-I-(Annoyed Grunt)" featuring a farming supply store, "Sneed's Feed & Seed", from the English surname Sneed; the joke is that the sign says the shop was "Formerly Chuck's", implying it formerly rhymed with Chuck instead ("Chuck's Fuck and Suck"). The sign became a meme on the online forum 4chan around 2012. It came to be used as a substitute for seethe (e.g. in the phrase "cope and seethe" → "cope and sneed"), then (as a noun) became synonymous with beta males when 4chan started automatically changing soyboy to sneed.

(Can this(+) etymology be sourced?).​
 
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