Up against the wall.

You know when you're at a social event and somebody you barely know thinks you look lonely so they walk over and say something like why so glum, chum? and you go heh-heh and they start talking and before you know it you're nodding your head up and down so fast you might actually beat your own brains out against the inside of your skull which doesn't seem so bad compared to what's happening on the outside of it which is your new friend is getting ready to open his wallet and show you baby pictures? Facebook is like that.