Mini Heart Attack 

An intense and often short-lived sensation of dread and fear of an adverse outcome, often immediately following an occurrence that disrupts a pattern

"Dude, that last step on those stairs gave me a mini heart attack"
"While I was sorting my photos, I had a mini heart attack when I deleted a good shot"

Mini Heart Attack by Au_dragon December 18, 2017

Mini Heart Attack 

That gut-busting, toe-tingling feeling you experience after consuming a particularly greasy or caloric meal, generally occurring after the initial joy of gorging oneself on burgers ends and the pitiful self-loathing of being a pathetic lardass sets in. Not to be confused with a real heart attack.

Hey Sarah, I went to that burger joint yesterday. After I devoured a triple bacon cheeseburger, fries, onion rings, and a milkshake, I could almost feel the diabetes tickling my toes. It was most definitely a mini heart attack.

Mini Heart Attack by The Percipient Scholar February 19, 2014