[neumann_alfred]

Ever noticed how moving your own tongue about in your own mouth is totally not like french kissing someone else? Kinda counterintuitive I know, but those have been my findings.

[bigfudge2]

Likely related the fact that you can't tickle yourself:

http://www.skidmore.edu/~flip/Site/Lab/Entries/2007/1/31_For...

[exim]

Yes, but my comparison was about paper/picture/magazine materials vs real body.