talk out (the side of) one’s neck
v. phr.— «It’s obvious you haven’t seen X and are talking out the side of your neck, to boot.» —“Re: spike lee & boston celtics” by Robin L. Gibson Usenet: rec.arts.movie Nov. 20, 1992. (source: Double-Tongued Dictionary)
Further reading
It was a dark and stormy night. So begins the long and increasingly convoluted prose of Edwards Bulwer-Lytton’s best-known novel. Today the annual Bulwer-Lytton Contest asks contestants for fanciful first sentences that are similarly...
After hearing our conversation about how dictionaries decide on a preferred pronunciation, and specifically about how to pronounce aioli, Vern from San Diego, California, wrote to say that a friend once made fun of him for pronouncing grimace with a...