Do not fall for the rating!

Rating: 4/10 (10 February 2019)

I was looking to watch some nice comedy flick over the weekend. Did some research and finalized on this one. IMDB rating-check. User reviews-check (and why didn't I filter on low ratings! ).
Anyways, so the movie is about sort of a loser, professionally and romantically, who is dumped by his girlfriend. People in the office don't take him very highly. He got flatmates, one who doesn't work and plays games, and there is another one who is serious about life. Our guy is obviously close to the gamer guy. After heartbreak, our guy and the doper-gamer drink the entire night only to wake up next day hungover to find out people are turning to zombies and they need to save themselves before any zombie bites them. So they kill a few zombies wandering around their house and get their mate's car to save his mother and stepdad. And then, his girlfriend and her mates. They head off to their favorite bar thinking it would be safe place but as expected isn't so and they are surrounded by zombies all around. The loser becomes the leader. Movie is very light hearted but it is like usual crass comedies out there, which have few scenes that may make you smirk but none of them actually making you lol and most of them making you meh. There is no proper character development, nothing convincing enough as to why the girlfriend dumps him and why he hates the stepdad and few other tits and bits. Movie is bland and absolutely flat. Or may be i never liked the British humour.