@dyslexec - I believe the words 'features', 'deliver' and 'backout' constitute the triple entendre that you mentioned.
This is one of those strips where you supposed to halt a second or two after you are done with the third pane, gp back and read the first two panes really carefully and correlate the words in the last pane with the ones in the first two! Obviously, you are forced to imagine situations/ask yourself questions that are not shown/asked in the strip!
I completely missed the punch line the first time around. I was too busy looking at that purse, expecting the punch line to involve the purse. I'm easily distracted by bright, out-of-place things. Now I've got, "One of these things just doesn't belong here." stuck in my head. Funny strip though.