Crack wrap is the nickname for a viral TikTok recipe combining tortilla, cottage cheese, and toppings, supposedly "addictively good." The "crack" in the name refers to the drug only as a metaphor for craving, the same way people say "this cake is crack." Not concerning. Your teen is just talking about food they saw on TikTok. The recipe is generally healthy. If your kid uses it constantly, ask them where they first heard it, not to police their speech but to understand which online community they are in.