brick oneself

Brick oneself is British slang for being terrified or extremely nervous. "I was bricking it." Vulgar origin (referring to soiling one's pants from fear). Not concerning, just informal British vocabulary. 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. Most slang of this kind moves through TikTok and group chats, so seeing it in your child's vocabulary just means they are plugged into normal teen internet culture.

Brick oneself (often "bricking it") is British English informal slang meaning to be extremely nervous or scared. The phrase has a vulgar origin (implying loss of bowel control). Use only in casual British contexts. Formal equivalents: "to be terrified," "to be scared." Common non-native mistake: parsing literally. The phrase is idiomatic, not literal. Read or listen to the word in context several times before trying it yourself; the right register is harder to learn than the dictionary meaning.