Sarcasm works best if you actually have facts to back you up. Here's the CDC (you know, the federal agency that supplies all the major epidemiological data for the United States) on helmets, for instance: http://www.cdc.gov/headsup/pdfs/helmets/headsup_helmetfactsheet_ski_508.pdf
Here's a leading motorcycle helmet safety organization: http://www.helmetcheck.org/thefit.aspx
Here's a quote from POC, who does a lot of primary helmet research and supplies the U.S. Ski Team: "A helmet should have a close but snug fit. Not too tight, not too loose." Oh, and here's USSA: "Helmets must fit properly to be of any use; they should fit snugly." Or you might try any, almost literally, website that sells helmets and offers advice on fit. Or you could ask a coach. Or your local ski shop. Or an MD who skis or specializes in neurology. Or an anatomist who studies head trauma pathology. But hey, what do any of these people know, relative to you?
Ever hear of the Darwin Award? Strongly suggest you ski with a nice loose helmet. Use that beanie. With luck you'll win the award.