Looks to be about 95% practical effects. Probably a fair bit of wire removal. Only oen that looked like vfx was the toothbrush gag, and I suspect that was on a green-stick that was removed with a bit of key and a clean matte. Oh and some things clearly run backwards like the DVDs falling into place. All good examples of how much effects work can be done using practical techniques with excellent results. The old fashion way is better sometimes.