I do that too. All the time. I lay down on the bike and rest my left arm on the tank. I got caught out in the rain comming back from the store today.... listen to this....

So I goto the 7/11 down the street a couple blocks, I get in there, and see Dasani (sp?) water, 2 for 5 bucks for the 6 packs. So not thinking... I pick up two packs and go up to the register. I realize this as soon as I start walking up to the counter, and laugh to myself. The lady behind the counter smiles at me and asks... "Didn't you ride up on that motorcycle?" "Yup.", I said. She kind of laughed and asked how I was going to get these home. I snickered a bit and said, "I like to make life complicated." She laughed and put them in seperate bags for me. So after a minuite or two, fiddling with these two bulky bags... I put one on each side of the handle bars, and slowly began riding home. It wasn't bad once I got going, but stopping for traffic sucked. I must have looked like such a dumbass. To make matters worse... half way back it started raining, so now Im home all soaked.... it was interesting.