Honestly if you asbolutely have to lie about something, make sure it is a lie you cannot be caught in.
A lot better things to lie about in life than being a navy squid!
Anyone who knows a real Navy SEAL would be a double fool to say they were one. When they find out your lie, and they will, you will wish you got an ass whopping! These guys are connected in a myriad of ways and things as simple as auto service or getting a job can be ruined when you mess with them.
Real veterans will bend over backward for anyone who was in the elite forces (SEAL, Green Beret, Ranger, PJ, Delta, etc.) If I’m running a business and a documented Navy SEAL asked me not to serve so-and-so because they are a fraud, you can bet I’ll honor that.
As a side note, I was a Navy certified SCUBA diver. I have been asked many times if that is the same as a SEAL and have had to explain many times that, NO, my 6 week course is just one small part in their long training. I am NOTHING like a Navy SEAL.