McDonald’s complaint: Chocolate shake was disgusting!!!, made me vomit, twice.!!

I got a large chocolate shake from. McDonald’s in bristol, tennessee and it was so nasty I can’t even fathom what would even make a shake taste as disgusting as this shake did one drink is all it took and I was immediately projectile vomiting as if that wasn’t bad enough it was all over my dad’s car that my vomit landed . I am more than ticked the hell off for this and very confused and not sure I want to know what was in it to make me put like that because I never have a weak stomach when I comes to nasty stuff but let me tell ya u would be more pissed than I’m sounding in this letter right now . Im 100% for sure of it. Oh and sorry but I don’t have a photo because I threw it across the street in the ditch because I was so mad about what had just happened . So forgive me for not having my nasty ass shake to take a picture of it but if it helps ,, it didn’t look like anything was wrong with it . … I looked normal to me … so I don’t know what it could have been but I’m about to never eat at McDonald’s again unless they make this right …. put yourself in my shoes … and imagine how disgusting it would be to have that happen to you .