Girl friend - Boy friend Joke: Girl after Romance asked her BoyFriend

Girl after Romance asked her Boy
Friend
.
Tum itna jaldi kyun thak jate ho,
main to nahi thakti..
.
.
.
.
.
Boy Friend:" Sadak kabhi khatam
hoti hai kya.. ??
Hamesha petrol hi khatam hota
hai...