IFM is an acronym for "In Fond Memory", usually used for a thing (not a person) whose value is dying or has died, i.e. a movie or a product going flop.
To IFMD: Is to partake in the act of fucking ones father, or dad. IFMD Is merely an acronym for "I fuck my dad". But really it doesnt matter whos father you sex, because you can always just yell IFMD.
"Hey Chris, way to break my copy of Fifa 10!" -S
"Im sorry things got a little out of hand when IFMD!" -C
Yesterday, I was on a date with this hot girl and when we were about to kiss, I let the biggest fart out. ifml
There was a photoshoot of the swim team for my yearbook today. The photograph looked like such a milf, and I got a massive erection. The photo was taken with me and my erection in the centre. ifml
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.