Professor to students: “ek platform 2 km lamba hai,
aandhi chal rahi hai 60km/h ki speed se,
ek train aayi aur delhi se mumbai
ki taraf chali gayi”
to sawal ye hai ke: “meri umar kitni hai?”
sab bachhe hairaan ho ke ek dusre ki shakal dekhne lage.
pappu ne jawab dene ke liye hath uthaya.
pappu: “sir aapki umar 42 saal hai”
professor: “good, lekin tumne kese calculate kiya?”
pappu: “sir hamare ghar ke paas ek admi rahta hai,
wo aadha pagal hai
aur uski umar 21 saal hai“