bellywash UK /ˈbɛli.wɒʃ/US /ˈbɛli.wɑʃ/ noun4 •(slang, old-fashioned) A weak or low-quality alcoholic drink. •Lemonade or limeade. •(slang, old-fashioned) A soft drink; pop, soda. •(slang, old-fashioned) Nonsense, hogwash, eyewash.That sounds like total bellywash to me.