"How do you wear out a pair of rubber hip boots?" Textured ceiling?
Shh... step on that crack and you break a mama's back...
"Only one kind of tickle or crack is possible"
... and I'm guessing you're not thinking a good ol' crack on the a$$? Or then maybe you are...
Talk about adding gas to heat and fire! Only one kind of tickle or crack is possible when you put Goof in the same post as "wear hip boots" and "rubber."
How do you wear out a pair of rubber hip boots? You put em on and walk out the front door. If ya don't want to wear them out you can just wear them in the bedrooom. Ha-ha. I crack myself up.