I wouldn't use "biting sting" as these are two different things and whilst "biting" can be an adverb, sort of, it doesn't really sit well with sting. The combination, sorry, lacks bite.
"each mouth signs a pseudonym. "...sings maybe? This line needs attention too.

Last edited by rayc; 4 hours ago.

Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe