A poorly substantiated assertion regarding the future status or make of an item which is cited by a dubious party for later use as a reference of gross inaccuracy and to exercise gloating. Most often employed in the context of technological advancement.
Here's some Claim Chowder for you; my buddy swears that there's GOTTA be an e-ink version of the iPad soon since people love their Kindles so much.
When a man says something that is of an undeniably homosexual nature which leads you to believe they may be a flamer.
M: "I love having a Tom Collins with lime while I watch Bicentennial Man, i makes me cry every time"
R: "Jeez dude, claim to flame."
or
M: "Check it out guys I can swallow an entire hot dog!"
R: "Gross, claim to flame"