http://blog.wired.com/geekdad/2007/07/fyi-slug-slime-.html
http://www.everything2.com/index.pl?node_id=1480745
Don’t know that I’d use the acetone mentioned in the comments, if there is a blister.
One of the comments from that 1st link you provided....
As gross as it may seem, kids do get a kick out of licking banana slugs and feeling their tongues go numb.
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Is that for real????