West Beers : Every Thursday @ The Lamb Brewery, W4 4PH

Is this a joke that I'm not getting?
If not then i dont know for sure but i always assumed it was kinda like a stretchy bit incase they got an ear caught so it wouldn't rip. I like to test my cats' ears periodically by tugging on them. They have thus far not ripped.

I think this is some pussy flap pun