"Well, gee, Heidi, thanks for bringing me that "sugah" I wanted in #30, but this Diet Coke still tastes like crap. I think I'll go borrow a cup from Gary...his captions are always "sweeter" than yours, so maybe his sugar is, too. Now away with you! I'm on a mission, and it ain't to Mars!"
Dave begins his journey for sweet satisfaction in the next picture -
http://www.invisiblerobot.com/roboti.../p6126604.html. Of course, Heidi can't stand to be spurned like this and prepares to exact cowardly revenge upon an unwitting Dave for his disloyalty. Hell hath no fury like a woman scorned....