A really really funny one!

Some 35+ yrs ago - guruji was in haridwar for the kumbh mela and he saw a naga baba sitting near the banks. So for some reason Big Boss decided to go and talk to him - and he went there and asked - baba could we discuss some knowledge please?
he haughtily looks at guruji and said - humpf! You??? What knowledge can you take??
Guruji smiled at him and said - thank you - I got it!
(He told us he learnt how never to be rude and stressed out like that naga baba)
And it doesn’t end - :D :D that person looked at G and said with great importance - you know what I can do?????????????
And Guruji said - no!
He said - I can - with a rope tied to my groin - pull a truck!
(And with this the whole hall burst out laughing :D)
And Guruji thought in his head at that time - what’s the use??? A truck can be started with a turn of the key!! What’s the point pulling it.. with your... well....