What do Chandler and Joey ride into Monica's apartment, angering her?

A dog statue

What is the river of forgetfulness in the Underworld called? Who was high priest during the early portion of Samuel's service at Shiloh? After Phoebe quits her massage job, what does she briefly sell over the phone? Which planet is known for a prominent hexagonal storm at its pole? What do you call a triangle with three unequal sides?