Harry (the Doberman) has finished his temporary
stay at my house with BiBi. Before he departed,
BiBi learned the final killer move from him.

" Yep. Sifu (Master) Harry taught me this:
If everything fails, headbutt! Bang! Look at this,
a reinforced aluminium bottle got dented by my head!!!
Feel the force!!! "

(Note from Tom: In reality, the bottle saved me on the
weekend hiking trip. I fell backwards coming down
an extremely steep slope, the bottle in the backpack
absorbed the full force. Don't tell BiBi though. It
was the force )