About/on your person humorous formal
Describe the state of carrying something on your body
If you have something on your person/body, it means that you are carrying it with you.
Do you have a rubber band on your person?
Customs officers found a gun concealed about your person.
It is often put behind a noun acted as the object of the sentence
He always has some candies on his person in case he has symptoms of low blood sugar.
It is unknown about this idiom's origin but it has been used for centuries, particularly in English legal language. This phrase was often used in a criminal case, which implies stolen goods "on the accused's person" (such as thief) was much stronger evidence of guilt than any other kind of evidence. In that case, it also has slightly resemblance with the phrase "caught red handed". Nowadays, this phrase can also have a more common meaning, which is to carry an item or object on one's body.
To begin to decline or deteriorate decline; to get worse very quickly
After his leg's injury, his skiing career hit the skids.