The son, having grasped his mother-in-law's weakness, offered a blowjob as a bargaining chip. Unable to refuse, she spread her legs, and he began to lick her pussy voraciously. She was then asked to "sit on my face," entering a face-sitting position! His tongue eagerly sucking at her crotch caused her hips to move on their own, shyly reaching orgasm! Unable to endure any longer, the mother-in-law took the cock into her mouth and inserted it deeply herself... leading to the forbidden development of incest!
