Is mayonnaise an instrument

Today at Gary’s house his MSN was logged in so I decided to talk to someone. Since Alex lived right next door to Gary, I started to talk to him ^^

Me (in Gary’s account): Yo Alex
Alex: Sup
Me: Do you have mayonnaise
Alex: ^o) Let me check

I was only kidding but within the next five minutes he had arrived at the door with mayonnaise which was incredibly nice of him. I feel bad for bothering him like that though