People are retards if they don't understand that this is not 'reality'
Of course this show is scripted... Are you dumb? The network would never allow and/or air things like Kenny stealing X-ray machines, Kenny slipping Spenny acid or Kenny buying acid from dealer. Of course this is written. It's not scripted and most characters in the show are in fact their real personas, but events and "reactions" are planned and written. Both guys are writers who have worked together in the past. This is improvised acting. The characters are exaggerated to amplify humor... It's simple.
Seriously...