Wiktionary
wazz
n. (context UK slang English) An act of urination, a piss or a leak; urine.
Wikipedia
WAZZ
WAZZ (1490 AM, "Sunny 94.3") is an adult standards radio station in Fayetteville, North Carolina, owned by Beasley Broadcast Group, Inc., playing "Soft Hits Radio the way it WAZZ".