he is speaking as if he is a vip

He is speaking as if he WERE a VIP.

Rules:
Sentences begin with capital letters.
Sentences end with periods or question marks or exclamation marks.
Abbreviations such as VIP are capitalized.
Because this is in the subjunctive mood, the correct verb is WERE.

http://englishplus.com/grammar/00000031.htm

If someone is speaking as if they are a VIP, it means that they are speaking or behaving in a way that suggests they hold a position of importance or privilege. This could include using a confident and authoritative tone, expecting special treatment, or acting superior to others. It is important to note that the perception of being a VIP can vary depending on the context and the individual's actions.