After a couple of 91's recently, I blasted through at last. Shot a 39 on the front and was so far ahead that even doubles on 17 and 18 couldn't stop me from an 86! It was drizzling when we started too which lead to the obligatory Carl Spackler quotes "I don't think the real heavy stuff is going to come down for a while yet.." etc.
Sure enough we got to 6 and I was at even par for the round. Rain really started coming down and the wind picked up. We were waiting in the cart while one guy ran out to tee off and then got back under cover. On my turn I stuffed a 9 iron about 10 feet from the pin on a par 3 and immediately told my buddies that they had no choice but to go the full 18 no matter what happened with the weather. Made the "the good lord would never strike me down during the best round of my life" comments and pressed on. Luckily it cleared up a bit and I stayed unconcious the rest of the round.
Hopefully it's the start of something and not just a fluke. I recall very clearly the same pattern with trying to break 100. Would get close and then blow up on the last 2 or 3 holes until I finally broke through with a 93.
Broke 100 in 2012 in my first serious season, wanted to break 90 last year and never quite got there. Best round was 92. I know there are a ton of great golfers on this site for whom an 86 would be a crappy round but felt pretty good to me.