S as in Sam

Whenever some customer service representative asks me for my name, I spell it out and ask them to repeat it back to me.
When I tell them my middle initial, I always say “S as in Sam.”
“Oh, so your middle name is Sam?” asks the person on the other end of the line.
“No, it’s not,” I say.
After saying “S as in Sam” for all these years, I don’t remember what my middle name is. I just know it begins with S.
So, I looked it up on my birth certificate.
The document says “Sasinsam.”
My parents suck.