The Brief: Omegalul is a Twitch emote that signifies amusement or laughter.
The “omegalul” Twitch emote is a variation of “lul,” which derives from LOL. The visual representation of the emote shows video game critic “Totalbiscut” (John Baine), who passed away in 2018, with his mouth wide open. The emote evolved from its original context on Twitch to be applied more widely and generally across the web and IRL.
— mogultwt central 🎲 | subathon arc (@mogultwt) March 15, 2021