Warning: The Vanishing Fabric Marker should not be used for signing checks.
The 2007 winners of Michigan Lawsuit Abuse Watch's "Annual Wacky Warning Label Contest" are in. The one for the vanishing marker could be used as an ad copy. The Watch also has just published a book Remove Child Before Folding: The 101 Stupidest, Silliest, and Wackiest Warning Labels Ever. Another good one is The Warning Label Book.