They like rock.
All that salt must make them thirsty.
Erudite because they like knowledge a lot more than materialistic things
Because that might be your bike
One rocks the mic, while the other mocks the reich.
If you invite only one, you'll have to share your beer.
Because he was Snowd en! (according to my friends this joke has been around for awhile, but I hadn't seen it yet, and wanted to share the goof)
They both take away the coffin.
They are both post apocalyptic but only one produces brand new cars.
He was doing crystal math.
He took his wife for granite.
Because he thinks it doesn't matter if you make it or not