Bhangra in your pant is basically a saying of having tingles/ sexual tingles in you private area. Bhangra is a type of brown kids dance where you hop around, thus bhangra in your pant is basically some hopping/jumping around going on in your pant. It's the cool/funny way of saying I'm/you're getting a boner or i'm/you/he's/she's getting wetdown there. LOL
Jugjinder: yooooo mannn i saw this super hot girl and i started having bhangra in my pant yoooo!!!
Sukhwinder: what the fuck does "Bhangra in my pant" mean
Jugjinder: im getting a boner u fudu!
Sukhwinder: eww wtf mann why you telling me!
Shata: an intimate part of a man's body, particularly expressed as his penis.
Bhanga : which literally means to "break something" in the Indian Language Bengali.
Together the words means to "Break your penis"
The word is a very good way of expressing your anger and disrespecting while fighting with anyone.