If you’ve ever wanted to see a dance ensemble writhe on the floor to “Summer Babe” or twerk to the Pacific Trim EP, then Alex Ross Perry’s new Pavement musical Slanted! Enchanted! may be the ticket for you. For a brief three-day engagement at the Sheen Center — a 273-seat theater tucked away in NoHo, billed as “New York’s leading Catholic center for artistic expression and intellectual engagement” — Perry contorted Pavement’s catalog into kicklines, jazz hands, and square dancing. Like Pavement’s albums, it was hard to tell how much of the play was an earnest sendup of a beloved band or simply a joke on the audience itself.