I'd like to clarify that my underwear is frill-free

Why did I read this as "thrill free"? Why do I hear this in a Lady Constance voice? Or do I mean Lady Bracknell? Talking of whom, the Borfolk "old guests" now include Moan & Groans Hard. Bit of an in-joke perhaps, but makes me wonder if the the old saying about how people often resemble their pet dogs ought to be extended to their heaven-sent anagrams (Elmer P Bleaty, Trad Slogrind, Malewink:Saucy etc)