Reverse Gaslighting

Telling someone the truth repeatedly to insinuate or imply that it is false, employing Reverse Psychology. This is normally used with phrases that sound far-fetched or even unrealistic because it is easier for someone to dismiss the repeated statement as false and assume that it's a joke or convincing themselves that it will not happen.

17 year old: I'm going to buy 10 Bottles of Jack Daniel's for my 18th birthday.

17 year old repeats this phrase multiple times to one or more people each to employ Reverse Gaslighting, they then proceed to buy 10 Bottles of Jack Daniel's on their 18th Birthday.