The clip circulates under the name TPup Cards and is credited to TacticalPinup, with the line That was a thing preserved as its identifier. Short spoken reactions like this spread through soundboards and short form edits because they can be dropped into almost any context without setup. Creators reuse it when a scene is too odd for a serious response, and its recognisable flat delivery has kept it in rotation as a shorthand for bemused, speechless disbelief online among meme editors everywhere today.
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Short voice clip from TacticalPinup saying 'That was a thing' often used as a deadpan reaction to weird, awkward or unbelievable moments online.
This is a brief spoken reaction built around the flat delivery of the line That was a thing. The voice lands dry and understated, as if the speaker has just watched something strange and can only sum it up with mild disbelief. There is no build up or punchline, which is exactly why it works so well as a quick cutaway. The short length and matter of fact tone turn an odd or embarrassing moment into a joke, letting the audience sit with the awkwardness instead of needing a long explanation.