The only thing worse than the act of the wait staff singing to you is the actual song the wait staff will sing to you. Because Warner Bros. owns the song "Happy Birthday" and apparently wants to sue anyone who infringes their copyright, no one ever sings this mundane and mostly tolerable song anymore, not in public. Instead they bust out their own birthday song, some Frankenfuck of a musical prolapse that hits the ear like an acid-spitting penis, just unfortunate and unwanted on even the most basic levels. It'll be fast-paced and full of clapping and mostly yelling as the wait staff, who now hate you for being born as much as you hate them for acknowledging it, race to finish and give you the shitty cupcake they keep in a vault full of broken dreams and shrugs in the back.
Short of including "by the way, your mom's ass tastes like cherries" somewhere in the fine print, there are few more offensive phrases you'll find on a menu than "no substitutions." A cause for debate, whether it means you can't swap chicken for shrimp or you can't have a dish made without onions or with extra curry, one thing this phrase definitely means is that the restaurant you're at has put all the fucks it had to give in a big, burlap sack and sent them to live in the country with some relatives. Now they just want you to sit, drain a gravy boat of chowder into your food hole, pay, and get the hell out.
Any decent restaurant should allow you to make requests above and beyond the menu. Most restaurants do, in fact. But not all. Some ballsy restaurant owners always seem to pop up here and there to test the waters of human tolerance with their "no substitutions," insinuating that you ordering food is somehow an inconvenience to them and you better take what you can get with a smile and a 15 percent mandatory tip. So when you want to order the shrimp alfredo but without any garlic because your garlic allergy may causes your eyes to bulge out Total Recall style, you should be allowed to. But this helpful restaurant refuses to alter their menu in any way.
I just wanted mozzarella, you son of a bitch!
Likely this is a result of premade food being heated and served to customers, which is in and of itself a whole different brand of bullshit, but whatever the reason for it, by putting this on a menu a restaurant owner is basically saying yes, he's providing a service, yes your business is the lifeblood of that business and the source of his livelihood, but no, you don't know your ass from grape jelly and you'll eat whatever the hell they give you because shut up, this restaurant is built on an ancient Indian burial ground and fueled entirely by hate and fossil fuels and clearly nothing good can ever happen here.