User blog comment:Elliot May/Petition: Fire Jessica Pink BLOG!/@comment-4871523-20160203175714/@comment-1633802-20160203185359

X-Pac heat refers to a time in 2001 when he was a part of X-Factor. The fans hated him and wanted him to go away because word got out that he beat his girlfriend. The term was coined "X-Pac heat" from then on when fans were booing somebody not because they're a heel but because they want them off the program or dislike them as a person.