You should be careful with other people's belongings.
Mary wants to cut her son's hair and knows that her friend Lisa has a nice pair of barber-quality clippers.
Mary wants to borrow Lisa's clippers.
Mary carries Lisa's loaned clippers with caution before and after use.
Lisa loans Mary her clippers and Mary throws them onto the kitchen table when she returns home.
Mary's son gets a nice haircut and Lisa's clippers are returned to her in the same condition.
The clippers miss the table and break apart.