One way to get the point across

https://lemmy.dbzer0.com/post/65906560

Pad Thai is not a traditionally spicy dish, though. It’s a mild street food, so you have to smother it in toppers to get it hot. You’re way better off ordering a spicy curry and asking for a side of chili oil to raise the heat.
Drunken noodles all the way. I was incredibly disappointed trying a new thai place when the drunken noodles were weaker than your average pad thai. I mean I know I’m white but if you’re gonna make it that weak at least ask me a spice level so I can say medium or something.
Ask them for a spice tray. Most Thai places will have chili oil, dried peppers, pickled Thai chiles, picked jalapeños, homemade sriracha paste, curry powder, etc. you can use as condiments.