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1.
Potatoes - North Eastern England derivative. Chetty - singular
Aye I'll have some chetties on me plet
by angel_eyes1_uk September 08, 2009
 
2.
corruption of the word twenty used by chavs and crusties, usually when discussing disco biscuits or cigarettes
"pete's bruvva lost chetty pills at Glastonbury"

"chetty B&H mate"
by John Riley August 24, 2004