Definition & Meaning of "shirtlifter"in English

What is the origin of the term "shirtlifter" and how is it used?

Shirtlifter is a slang term that appeared in mid-20th-century English as a derogatory label for a male homosexual. The term comes from the imagery of lifting a shirt, which was used metaphorically to suggest sexual activity between men. Historically, it was insulting and mocking, meant to demean men for their sexuality or perceived effeminacy. Today it remains offensive and vulgar, and its use is generally limited to informal, sexualized, or aggressive contexts rather than polite or neutral conversation.