Steffi Graf; Steffi
noun
1
a laugh. Rhyming slang, formed from the name of the German tennis champion (b.1969) UK, 1998.
2
a bath. Rhyming slang, based on the name of the German tennis player Steffi Graf (b.1969) UK, 1998.
3
half an ounce, especially of drugs. Rhyming slang UK, 2003