Enlargement of a woman's (or mans) neck while in the act of deepthroating a rock hard cock. Deep enough infact, to cause low pitched audible sounds resembling the vocal sac of it's the similarly named amphibian.
"I'm serious.. this broad had the grabbed my cock and smashed her face against my stomach. Complete "bullfrog throat" she could tongue my balls with the her lower lip over my sac.
by JimmyJongTidings May 8, 2018
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