1. Physics: "Do you know what is attraction force?"

"Yes. The force which attract me toward you is the force attraction!"

"What do you mean by that??"

_

2.  Chemistry: "Do you know something about atoms or chemical  bonding."

"Hmmmm.. Yeah. I know little bit about Covalent Bond." 

" oh! That's nice than. Tell me what you know."

 " The attractive force which exists due to the mutual sharing of feelings between two peoples of different gender or sometime same gender, is called COVALENT BOND "

"HUH!!????"

_

3. Biology:  "Why are you staring at me?" 

 "I want to ask you something. Can I ?"

 "Yes. You can."

"Okay! So now tell me why only male and female gamets take part in the process of reproduction. Female and female gamets can also  form babies. Right?"

"WHAT!!!! Are you out of your mind!!"