Though it sounds doable, trying this is super dangerous. Why?
Unpredictable Contacts: You might brush against something that closes the circuit.
Voltage & Current: Even without a ground path, high-voltage wires can make strong electric fields that induce current in you.
Humidity & Moisture: Damp air or skin can create unwanted paths for electricity.
Electric Fields: High-voltage lines make big electric fields that can sometimes induce current without direct contact.
If you hold a live wire and touch another object, especially a grounded one, you make a “bridge” for electricity. It then flows through you to the ground. Since our bodies conduct well, it can wreck internal organs, nerves, and muscles, often fatally.