Team Fortress 2 : How to Spycrab

Seems you never see this technique. :O This technique is just for fun. So, the Spy can move like a crab :D.
So, here's the steps :
1. Press 4 as the Disguise Kit.
2. Aim up.
3. Press ctrl to duck.
4. Walk.
5. ...... SPYCRAB!!!! :))



Here's the example that the Spy did. ;)