mind burp
The moment of relief when on has made a breakthrough on their "cerebral constipation." The "aha, I remember" phenomenon when one finally, remembers what they have struggling to remember.
After being asked what mafia film won Best Picture 1972, the movie buff, after struggling for 27 minutes, finally had a "mind burp" as he cried out, I got it, I got, "the Godfather!"