Dwayne Johnson and Jimmy Fallon collaborated and filmed a segment at Universal Studios this week. In the segment, they photobombed unsuspecting tourists dressed as mascots. An unexpected moment occurred, when Johnson surprised his biggest fan and made him cry from happiness. On his Instagram account, Johnson recalled, ?When he hugged me he was shaking and giving that grown man cry. Not only will I never forget this day, but stuff like this will always be the best part of fame.?