Some mornings, I use Head & Shoulders.
Some mornings, I use apple-scented Suave.
And some days, I'm feeling daring, so I pour a little Head & Shoulders into my hand, and then pour a little Suave into my hand as well, and then use the soapy combo to wash my hair.
And every single time I do that, I secretly hope that I'll create a little "science experiment"-style volcano of erupting shampoo.
It hasn't happened yet.