“The Wedding Ringer” could have skated by on Hart and Gad’s ability to play off one another but writer and director Jeremy Garelick – and his co-writer Jay Lavender – relies too heavily on cheap pratfalls and physical gags, most of which aren’t very funny. As shown in the preview, Gretchen’s grandmother (Cloris Leachman) is set on fire, which only escalates when someone tries to put the fire out with alcohol. “It’s making it worse”, screams Gad’s character. Same could be said for the movie.