Instant-Gravefill Share definition Flag Instant-Gravefill means to suddenly be filled with remorse, sorrow, or regret. My dog's death was an Instant-Gravefill for me man. Instant-Gravefill by MrGoodBerry March 10, 2026 0 0 Get merch Get the Instant-Gravefill mug. Buy Now — $32.95 See more merch