Congratulations, you pretty much just watched the entire movie. "Plot" is Johnny Knoxville going from set piece to set piece fishing for laughs.
There are a few funny moments in this
dancing at the strip club for example
some lame moments
stupid "will you be my Dad?" section with the kid walking around the streets
and one almost sinister moment
the "Dad" looking like he was about to get killed by a bunch of angry bikers
Unfortunately given I'd seen 95% of the footage already it was a bit meh.
2 out of 5 KFC buckets. Probably a bit better if you're entirely smashed / stoned... or hadn't watched the trailer...