A rough calculation of how much it'd hurt (or not): Atmospheric pressure is 10.1N/cm^2, or 0.1N/mm^2. The hole is 2mm diameter, or ~3mm^2 in area, so the force over that area would be ~0.3N or roughly 30 grams.
It's not a lot of force. I'd be more worried about my skin sublimating, however.
I'll let someone else have the fun doing the math, but I would guess his heat radiation (convection and conduction with vacuum are going to be negligible) would be on the order of milliwatts, which'll take an hour or so to change the temperature of 10g of skin by 1°
It's not a lot of force. I'd be more worried about my skin sublimating, however.