Maybe it was the unseasonably chilly weather in Tiger Stadium.
Maybe it was unbeaten LSU wearing its detested purple jerseys.
Maybe it was the ninth-ranked Tigers' invincible, comfortable, casual feeling of being a 45-point favorite over Eastern Michigan, a team overmatched in size, speed, experience and talent.
Maybe it was a home crowd so nonplussed by the Tigers' second straight shaky defensive performance, more dumb penalties and unsteady pass protection that it never considered the visitors from Ypsilanti would be such a tough out.
But sans running back Leonard Fournette's historical third straight 200-yard rushing performance, not much seemed in rhythm for LSU in its 44-22 victory Saturday night.