Grandma 's Boy , has an approval rating of 16 % based on 63 reviews and an average rating of 3.5/10 , while the audience had rated the film at 85 % based on more than 266,00 reviews with an average rating of 3.7/5 .
The site 's consensus states : `` A gross-out comedy that 's more gross than comedic , Grandma 's Boy is lazy and unrewarding . ''
Grandma's Boy -LRB-2006 film-RRB-