Ifym Share definition Flag An acronym for "I fucked your mom". Coined by James Ransone as Eddie Kaspbrak in IT Chapter Two, meaning " I love you". "Richie..." "What?" "I fucked your mom (ifym)" Ifym by Ceiling fan September 12, 2019 0 0 Get merch Get the Ifym mug. Buy Now — $32.95 See more merch