It was a tie, by golly, a tie! The winning captions are (in no particular order):
Ditto I: We don't know what this three legged thing is, so we locked it in the box. If it is yours, the key is on the roof of the store. Thank you. PS: It bites. See the big mouth? There are also big teeth.
Ian H: Stand still with arms at sides while transport is beaming your party aboard.
The winners have been contacted and will soon be the recipients of some awesome SGF Swag. You can always get your own SGF Swag by clicking through to the SGF store!
Thanks so much to everyone who sent in a caption. And if you see a safety graphic that makes you say W T F?? Please send it to me!