Can the world's oldest adolescent maintain his cool while living with his grandmother? Alex (Allen Covert) is a 35-year-old video-game fanatic who gave up a career in accounting to take a job testing games for Brainasium, the company behind the wildly popular game "Eternal Death Slayer." While Alex took a big pay cut to land his dream job, he's happy with his work and is making ends meet -- until he discovers that his roommate hasn't paid the rent for the last six months, using the money to finance repeated visits to a local massage parlor. After running out of friends who will let him sleep on their couch, Alex swallows his pride and moves in with his grandma Lily (
Doris Roberts), who loves Alex and is happy to give him a place to stay in exchange for doing chores around the house. Lily shares her home with two friends, perpetually confused Bea (
Shirley Knight) and sexually adventurous Grace (
Shirley Jones), and between the three of them, there's always work to be done, keeping Alex busy nearly every night. While Alex tells his co-workers he's living with three attractive women who are running him ragged, they don't know the real story; in the meantime, Alex is trying to charm Brainasium's beautiful new executive, Samantha (
Linda Cardellini), while butting heads with the firm's space-case CEO Cheezle (
Kevin Nealon) and J.P. (
Joel David Moore), a teenage game designer who is no longer in touch with reality. Grandma's Boy was the first feature film from director Nicholaus Goossen. ~ Mark Deming, All Movie Guide