In England, flaming or flamer have nothing specifically to do with homosexuality. The word "flaming" can, however, be used to indicate annoyance or disapproval, eg "He's a flaming idiot!" Flame-broiled and broiled are American (not English) words. The English for broiled is grilled. None of these words are used as euphemisms for homosexuality in England, nor as euphemisms for anything else.Flame-broiled is a word, meaning cooked by a flame. The sentence given probably refers to being hot (uncomfortably hot) or is a euphemism for homosexuality (but this is not a standard expression). Being a "flaming homosexual" is more common, as is "being a flamer".