Someone is miserable because they’re constipated, and their
friend asks them if they can do something with them, like go to the movies, or
go out on the town, and the constipated person says: “Can’t do.” And the friend
asks why, and the constipated person says: “Can’t do.” And the friend says: “Well not with that attitude you can’t! Here take (brand of laxative): it’s the
‘can do’ laxative!” And the friend tosses a packet of the laxative to the
constipated person, who looks at it and takes a dose. Then we see the formerly
constipated person come out of the bathroom, and the friend asks: “What do you
say now?” And the formerly constipated person says: “Can do!” Then as we see
the two friends grabbing their things and going out the door together, the
announcer says: “Can’t do due to constipation? (Brand of laxative) is the ‘can
do’ solution!” (Or: “(Brand of laxative) gives you a ‘can do’ attitude!”)
