What did you do at 4:20 Monday? Smoked a spliff; Didn't smoke a spliff; Hmmm, working?

-- "Online poll" in Vancouver 24 hours on April 21, 2009

One of these things is not like the others. The last option should be, Hmmm, worked? If the question was changed to What were you doing at 4:20 Monday?, then Hmmm, working? would be a correct option. But in that case, the first two options would have to be changed to Smoking a spliff and Not smoking a spliff.