So, first, watch this, which is Jeff Goldblum (as chaos theory mathematician Ian Malcom) snickering? chortling? snortling? chickering? in 1993's Jurassic Park. Not exactly a meme, but hold onto your butts, it's gonna be one, big time.
Now listen to this, which is (clears throat) Hahahrawrrahaha by FLIPSH0T (feat. Jeff Goldblum) You will not be able to make it through without laughing, too, probably in rhythm.