I can tell time, can you?

9:05-co-worker says to our boss "I'm going downstairs to watch the 15 min video before our 9:30 meeting". Dumb Ass Boss (DAB) says "are you going to be back before our 9:30 meeting" & then goes on to say it takes X minutes to get downstairs (from 3rd floor to 1st), then you have to get someone to set up the TV & put the video on, & then.... If DAB would shut the F up, he could have been down watched the video & been back by 9:25, but no, by 9:15 DAB was still flapping his gums to co-worker. Co-worker then missed opportunity to view video.