Giving a 2 star to be kind. My teenage sons got bored and wandered off - the toilet humour parts are 1980s school boy humour. Not funny then, not funny now.
It's really poorly edited. The start gives no idea what is going on and flashbacks would have helped give an idea what is taking place. The rest is all over the place and it lacks pace.
To be honest, it's one of those films that you feel like it's not got going yet, like an old car on a damp Tuesday in Northern England that is struggling to start.
I got bored myself, watched Car SOS on my phone and only found it remotely engaging in the last 15 minutes once SOS finished.
Overall: Trys to work but sadly doesn't get going.