a quirky twist of fate, synonym of coincidence, as shown in "Doctor Horrible's Sing-Along Blog"
Doctor Horrible's Sing-Along Blog.
Billy: Hey, this is weird. I ordered one frozen yogurt and they gave me two. You don't happen to like frozen yogurt do you?
Penny: I love frozen yogurt!
Billy: What a crazy random happenstance!
Alex: "So bromeo, how'd last night go?"
Christian: "Well, I happened upon this girl, right?"
Alex: "Right."
Christian: "But this was no simple happenstance. I had my hands on my hips and my pelvis thrusted forward like I had conquered the huns."
Alex: "I'm so proud..."