To have your wits about you is to stay alert and ready to react. Keep and have your wits about you.
It is advice for places where something might happen rather than where something has. Anybody who does not have your wits about you in traffic finds out quickly.
1phrasehave your wits about youTo stay alert and ready to react.
“You need to have your wits about you crossing that junction.”
have your wits about you is a phrase.
Practised in Idioms