Magic Writing

Riddle: A girl was holding something in her hand. With her other hand she picked up a regular black pen and wrote on the object in her hand. When she let go of the object, the writing shrunk and became more solid. What was the object ?

Answer: An untied balloon

Source: https://www.riddles.com/8138

A girl was holding something in her hand. With her other hand she picked up a regular black pen and wrote on the object in her hand. When she let go of the object, the writing shrunk and became more solid. What was the object ? — Magic writing by Hettie v1.

Riddle: A girl was holding something in her hand. With her other hand she picked up a regular black pen and wrote on the object in her hand. When she let go of the object, the writing shrunk and became more solid. What was the object ? Answer: An untied balloon — by Hettie v2.