“Dude, that gif you posted was so appropriate”
“It’s just serengifity, my dude”

See examples in reddit.com/r/retiredgifs

"I asked Jenny where the beer was and she said 'Just over the horizon, like my dreams.'"

"Yeah, that girl has a major case of Main Character Syndrome."

A person is listening to George Clinton's "Do Fries Go With That Shake" and they happen to come across an animated .gif of Homer Simpson dancing to the beat. That would be considered serenGIFity.