"don't hold me to that" = "don't blame me for that"

[Mark Mandel]

Just heard on WHYY, in an interview with a dermatologist who has
founded a prospering chain of tattoo removal shops called "Dr.
Tatoff". The quotes are approximate.

Interviewer: What about the lower back tattoo? You said there's an
interesting name for that.
Dr. Richard Kirby: (chuckle) That's called a "tramp stamp". I didn't
make that up, so don't hold me to that.

--
Mark Mandel

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The American Dialect Society - http://www.americandialect.org