Every time I see a bag of Hershey kisses, my balls get so wet

harold and Kumar Escape from Guantanomo Bay (2008)

Chosen by Brian Marshall who had this to say: 'a no brain stoner movie sadly not as funny as Harold and Kumar get the Munchies, but still fun. Neil Patrick Harris as usual steals the show. Don’t expect highbrow but sit back switch off your brain and enjoy the ride.'

This starts with a gag about having a big shit and goes downhill from there (within about two minutes one of our heroes has spunked in his own face).
Pretty much worthless, it hits every joke you'd expect with the dull clunk of moribund inevitability.
Painful, dull, horrid.