"Was up clouds" is a slang greeting commonly used among friends. Although the spelling may confuse some, it is pronounced as "wɑz ʌp klaʊdz". The 'a' in "was" is pronounced as the short 'o' sound, while 'up' is pronounced as 'ʌp'. The 'w' in 'was' is silent, and the 's' is pronounced with a 'z' sound. 'Clouds' is pronounced as 'klaʊdz' with the 'ou' sound pronounced like 'ow'. Overall, "was up clouds" is a casual and informal way of saying, "what's going on?" or "hello."