Mar. 4, Solomon R. Guggenheim Museum, 1071 5th Ave. (at E. 89th St.), 212-423-3500; 9, $25. The white snail of art turns 50 and to celebrate, Animal Collective has teamed up with Danny Perez to create one-night-only of sensory bukkake.There’ll be lights, music and action, and guests are invited to wander aimlessly around the entire museum experiencing the far outness of it all. Bottom Line:You won’t know if the kids making out are fucked-up arteests or Tino Sehgal’s foot soldiers.