Daant nikaalne ki 400 rupey fees

Daanto ka doctor :- " ye lo aapka daant nikal diya , ab laao 400 rupey "
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Rogi :- "lekin doctor sahab , aapne toh daant nikaalne ki fees 100 rupey likhi hai,
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Doctor :- " daant nikaalte time aapke chilane se jo 3 rogi bhag gaye unke paise kon dega "