1. False
2. I was circumcised when I was an infant, but if you are referring to "how it feels" in terms of sexual penetration, I can still tell you the difference. (I just finished writing an extensive tutorial in
Convincing girl to anal that was so long it should be an article, so I'm rather unphased by "dirty talk" at the moment.) The reason I can tell you the difference is because the skin on the penis can be manually gathered and pushed up over the glans, the head of the penis. Furthermore, there is a little foreskin left post-circumcision that has high elasticity, also making these movements possible. I've masturbated like this on occasion for experimental purposes, but I must say I much prefer it without the bundled skin. The stimulation just isn't the same, which can actually be useful. Depriving the penis of the stimulation it is used to can leave it wanting more, heightening desire. But this can easily be accomplished by stimulating the shaft rather than the head, or sex with a rubber on.
I know that most women prefer the feel of having sex with guys that are circumcised because the penis is not sliding around in his own skin before stimulating the vaginal walls.