Definitions by Derp Derpington McDerpFace

Ringflation 

The outcome of a never-ending arms race to get larger and larger engagement rings

Dude A: Damn man did you see the size of the ring that Derp bought for Herpette? It's massive!
Dude B: Yeah man, the ringflation is ridiculous. Back in my day, a 0.5 carat was already pretty ridiculous

Ringflation by Derp Derpington McDerpFace December 30, 2018