my latest trick.

me:  Hey Dav, can I take a picture of your eyeball?

Davin: My eyeball?  What's it for?

me:  Oh, I'm doing a little science experiment.  (keyword being science)

Davin: Yeah, sure.  (says the boy who hates having his picture purposely taken.

SUCCESS.  (enter laugh of motherly satisfaction)

My little trick, will be going up on my little wall!