Teacher vs Student

Sir:"Samajh Tujhe 10 LADDU Diye..
.
.
Student:"Mujhe.. ???
.
.
Sir:"Samajh Le Na Tere Baap Ka Kya
Jaata Hai...
Usme Se 5 Laddu Maine Le Liye To
Tere Paas Kitne Bache..??
.
.
Student:"20
.
Sir:"Kaise.. ??
.
.
.
.
.
.
.
Student:"Samajh Le Na Tere Baap Ka
Kya Jaata Hai..
.
Teacher shocked
Student rocked