When "LOL" is used as qualifier used to diffuse tension at the end of a particularly serious statement. The user of this qualifier usually anticipates a negative reaction (the nature of which is either anger or awkwardness) from the listener, and uses "LOL" as a sheild to prevent any anger or offense from being reflected back toward them.
After posting a particularly passive aggressive Facebook post, user them comments on own post:

"PS.. This has nothing to do with any particular person, or anything else. If you are upset about this post then you may need to seek out and fix your issues. Lol"

Reader then takes offense.....

User says, "I said LOL, you can't get mad. I used LOL Diffusion!"
by gijomama November 20, 2013
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Def: passing a large amount of gas, most commonly in a public place.
Hey craig i just came back from my jog, was diffusing hardcore on that last corner.
by cockblonk98 July 11, 2021
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Using the pathological male brain as a defense in order to defend from an attacker. Usually a good thing to do if you know the attacker is just a friend who is heated in the moment and you feel a fight is more or less unproductive. Also can be done through yelling at each other first then talking things out afterwards.
Cody: *stab*

Chase: *emotionally touches cody through tone of voice to trigger extreme love from cody which is a symptom of borderline personality disorder* *grabs knife while caught off guard* I just diffused.
by Naukloster July 5, 2018
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The movement of particles from an area of higher concentration to an area of lower concentration
I’m using diffusion to dry off my pants.
by bluestinger66 November 28, 2022
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A female that makes you forget about your past relationship.
Brody: man I wonder what my ex is doing right now.
Aaron: sounds like you need a memory diffuser man
by Aaron aka little smile July 20, 2020
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A memory diffuser is a female who makes a man forget about his ex.
Brody: damn bro I miss my ex
Aaron: sound to me like you need a memory diffuser
by Aaron aka little smile July 20, 2020
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