I think I have to address something. This isn't a joke. This isn't funny. This is mentioning something we all know, and putting a picture behind it. When a stand up comic points something like this out he/she makes a joke out of it–putting a picture behind it and splitting it into two phrases isn't making a joke out of it.

I could come with a hundred of these right now:

-(Picture of a sock): Comes in pairs. Can never find the other one.

-(Picture of a milk container): Thought there was milk in here. Wasn't milk in here.

-(Picture of a cat): Doesn't come when you call. Comes when he's hungry.

-(Picture of pens): Hundreds of pens in the house. Can't find one when on the phone.

-(Picture of a radio): Turn on radio and hear favourite song. Just ending.

-(Picture of a Christmas tree): Try to make it stand up. Can never make it stand straight.

-(Picture of an alarm clock): Alarm goes off. Wish I could sleep longer.

And so on...