On God

Definition:

Implies that the speaker is telling the truth, being an abbreviation for "I swear on God"

Context:

"On God" originated from African-American Vernacular English (AAVE) with some of the earliest records from 2008 showing the meaning as "When you're serious, and no one believes you." It became notable as an online phrase in 2014 from mainstream Twitter accounts that began to use it as an image caption.

Now it is used in both memes and verbal speak, often in similar situations as (or paired with) “no cap” or “fr” ("for real") to mean “telling the truth.” Sometimes, on social media platforms and texting, the term “On God” is further abbreviated to ONG.

Despite the use of the word “God” it really doesn’t carry any religious connotations.

Example:

^{(for legal
reasons, all names & events in the following scenario have been made
up)}

Jakub: “Is anyone even buying the Tesla Cyber Truck? I feel like it’s all just talk”

Zak: “Well I’ve seen 2 Cyber Trucks driving around my neighborhood this past week”

Jakub: “Oh fr?”

Zak: “On God - and there’s already a Facebook Marketplace listing nearby for one!”