4 Nail Polish Colors To Let His Grandma Know You’re Fucking

Blue It Out Of Proportion (OPI, $10)

For a classy yet unconventional look, try a daring royal blue like this option from OPI. A royal blue indicates that you’re high-fashion and high-class but also that you like to have a little fun. Let his grandma know you’re cool with some butt stuff by rocking this bold look!