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New to self-catheterization, this brave amateur explores his limits during a solo break. With a rectal plug already in place, he inserts a catheter into his urethra, grimacing at the initial discomfort. He films himself, his big cock growing stiff despite the pain. He then inserts a rectal thermometer, feeling the cool metal against his prostate. Moaning, he masturbates, his cock throbbing as he imagines ass-fucking himself.