Caption Contest No. 12

We're back with another cartoon by regular _floss reader, the multi-talented Robert Bonotto. To repeat the rules, the idea here is quite simple: Your job is to come up with a gag. Make us smile, make us laugh, extra-points for those who are able to drop some interesting fact or trivia along the way.We'll narrow down the entries to our favorites and then let YOU guys pick one winner. As with last time, when dropping your gag in the comments, also let us know which t-shirt you prefer in case your caption is selected the winner. (T-shirts can be found over in our store.)
Lastly, if you're good with the pen and think you'd like to contribute a cartoon of your own for a future caption contest, or want to pitch me an idea for one, please leave a comment and I'll be in touch with you via e-mail.
click cartoon to enlarge