1/ If someone nearly bit my cock off the first time I had oral, I would be extremely wary about putting it back in someone's mouth.
2/ I have no desire to have a cock up my arse
3/ I have no desire to swallow

Like PF quoted, prudishness is more of a silly attitude to sex - so I don't think you are a prude.

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Vigil, if you were my husband, I would give you poison.

Madam, if you were my wife, I would take it.