An enraged Florida tenant viciously attacked his elderly roommate — because the man accused him of taking too many showers, according to a new report.

Byron Christianoudis, 48, was going to take a shower Tuesday when his 70-year-old roomie — also his landlord — told him he couldn’t because he takes too many, the Pasco County Sheriff’s Office told local station FOX 13.

Things got dirty when Christianoudis placed his roommate in a headlock and scratched the man’s face with his nails, causing a laceration.

Christianoudis fessed up to the crime, but told authorities he felt threatened and was defending himself, according to the report.

He was busted on charges of battery on a person over 65 years old.

Christianoudis doesn’t have a clean criminal record.

Back in August 2015, he allegedly masturbated on a Florida beach as he watched an adult woman and a girl walk down the water’s edge, according to a criminal complaint obtained by The Smoking Gun.

He had a bizarre excuse for the lewd act: “My girlfriend was out of town and I miss her,” Christianoudis said, according to the complaint.