Tammy (2014) on Netflix

Tammy, who was recently fired from a Topper Jack's fast food restaurant, returns home only to find her husband enjoying a romantic meal with the neighbor. She quickly packs her necessities, and travels down three houses to her parent's home. Upon denied use of her mom's car to drive to Niagara Falls, she quickly resorts to an "ailing" grandmother, who also lives in the home...Only instead of traveling alone, Grandma Pearl wants in on the road trip. After realizing Grandma Pearl has the funds, they hit the road. Pearl soon proves to be quite the alcoholic despite her diabetes, and Tammy quickly turns into the "baby-sitter." From finding love in a bar to robbing a Topper Jack's in order to bail Pearl out of jail,the quirky adventure will have you finding yourself riding along for the misadventures of Tammy.