<human>: I was at a party with a friend of mine who attends university in Southampton. At this gathering, there was a guy who did not know me as I attend a different university and was only there for said party. I got to talking with him and it is pretty obvious from the get-go that he is a massive bullshitter.

The conversation quickly turns to him bragging about how he is the only heir to a massive fortune (millions of pounds) as his childless uncle "invented the fiberoptic internet connection."

It quickly becomes more rediculous as he starts to claim that he is a drug dealer who makes hundreds of pounds a week selling heroine and cocaine that he makes himself out of paracetamol and ibuprofen. Since we were at a party populated mostly by Art and English Literature students, I guess he figured he could get away with it. He then asks, "So, what is it that you study?". I told him the truth. I study Pharmaceutical Science. 

His bullshit immediately stopped and he quietly walked away.

Can you give me the gist of the text in a nutshell?
<bot>: Guy tells me he is a millionaire drug dealer who makes money by combining paracetamol and ibuprofen into cocaine and heroine. I tell him I study pharmaceuticals, he shuts up and walks away humiliated.