When a restaurant fries up a chunk of chicken breast, covers it in Buffalo sauce and calls it a wing, is it a harmless little issue of semantics, or consumer fraud?

A new federal lawsuit makes no bones about it: The suit alleges the practice is fraud and companies like Buffalo Wild Wings are duping customers by selling chicken wings that aren’t in fact wings. 

Aimen Halim of Chicago filed the lawsuit against Buffalo Wild Wings on Friday, saying he went into the Buffalo Wild Wings location in Mount Prospect, Illinois back in January and ordered “boneless wings.” 

“Unbeknownst to plaintiff and other consumers, the products are not wings at all, but instead, slices of chicken breast meat deep-fried like wings,” the lawsuit reads. “Indeed, the products are more akin, in composition, to a chicken nugget rather than a chicken wing.”

The Los Angeles lawyers who filed the lawsuit are seeking other consumers who also have eaten boneless wings at one of the chain’s hundreds of locations across the nation. 

“This clear-cut case of false advertising should not be permitted, as consumers should be able to rely on the plain meaning of a product’s name and receive what they are promised,” according to the lawsuit, obtained by USA TODAY. 

‘Our wings are 0% buffalo’

Buffalo Wild Wings did not directly comment on the lawsuit when reached by USA TODAY, but pointed to a cheeky tweet sent out earlier in the day that poked fun at the litigation. 

“It’s true,” read the tweet on Monday. “Our boneless wings are all white meat chicken. Our hamburgers contain no ham. Our buffalo wings are 0% buffalo.”