1 definition by pseudocertainty

A silent internal giggle (SIG) is a rare derivative of LOL. You may be able to catch it if you wake up before daybreak and sprinkle fish feed at the top of the nearest mountain above 4000 feet. Then, and only then, may you be able to summon the power to become one of the few users of the term, if one of the following situations occur:

- when you can't muster the effort to actually LOL
- when you can't muster the effort to pretend even one more time that something is worthy of an LOL
- when you need to disguise the fact that you're watching hedgehog videos during work hours
- when a friend messages you something funny about someone who is in the same room as you

... then you would opt to SIG rather than LOL.

Of note, your dad does not need to go to the mountain top to use this term. He only needs to pretend that he's back in his sorority days for multiple uses of the term to spontaneously occur.

Less than 42 people have ever understood this term.
Mitra: Did you hear that Scott is still going to the Kidz Bop concert because he bought advance tickets ten years ago?
Josh: sigz classic sunk costz

Piyush: "Yo, did you see that video where the hedgehog eats a birthday cake?"
Josh: "Yupppp, im still siggling"

Karina: "Eeks I just laughed out loud at a pun during an all-staff meeting and realized I wasn't on mute!"
Josh: "Dude, get siggy with it."
by pseudocertainty October 16, 2018
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