STG is internet slang shorthand for swear to God — used to emphasise that what you are saying is absolutely true, or to express exasperated disbelief. Typed in all caps or lowercase, it functions like a verbal oath, the digital equivalent of placing a hand on your chest. Widely used in text messages, social media, and comment sections, STG adds urgency and sincerity to statements without needing a single extra word.
STG if this bus is late again I am buying a bike today.
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(US, prisons) , a prison gang.
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Viral internet speak — memes, ratios, main-character moments, and the algospeak of every platform from Twitter to Reddit to TikTok comment sections.
See all Internet & Memes slang on Slangora.