It's similar to the whole "Thanks Obama" meme from years ago.

Basically it's "Ted Cruz is why <insert first world problem or minor annoyance here>". The idea is to make a joke out of people seemingly blaming him for the weather and everything else they can think of.

Some zingers include...

-Ted Cruz is why your daughter is dating that weird kid from her art class.

-Ted Cruz is why your check engine light never turns off.

-Ted Cruz is why the McRib isn't a permanent item on the menu.

Go ahead, try it out in a random thread about Cruz!