'The look that puddle had. The look of a puddle with a secret. The look of a puddle whose middle bit conceals a bottomless hole, which, if you step in it, will drag you down to the centre of the earth. That's why you didn't walk through it.'
'I didn't walk through the puddle because I have a hole in my boots.'
Some people just have no imagination.
P.S. If you say 'puddle' over and over again, it begins to sound funny. Actually, puddle is quite a funny word. Puddle. Puddle. Puddle