there are 2 slipups that occur during the infamous cafeteria scene...where Bluto is piling food on his tray. 1. Watch closely as he puts a small bunch of bananas on his tray..they will be on the 'right' side, he then continues to walk over to the next food display and the bananas are now on the 'left' side..neatly piled on some apples...his hands at no time leave his tray.
2. Right after this watch closely in the mirror that is above Bluto, a little to the right of the food display you will see the cameraman's(?) feet walking along beside him...he's wearing black pants and black shoes.
3. the third one is a little iffy as i saw it on TNT and this slipup may have had something to do with sloppy editing due to the nudity...anyway, this scene takes place at the girls' house when Bluto goes to spy of them...he grabs the ladder and puts it at the 'first' set of windows, then the camera cuts to a wide angle and shows him standing on the ladder outside the 'second' group of windows..the camera then comes back and shows him hopping the ladder over to the second set of windows...after the camera just showed he was already there...i havent seen the 'un-cut' version in quite some time, so this scene may be totally fine in that version...