"like Mercutio's it was enough"

Romeo and Juliet
Public DomainRomeo and Juliet - Credit: Ford Madox Brown
Mercutio appears in Romeo and Juliet by William Shakespeare.  Mercutio is a lively, witty character who is a friend of Romeo's. "Like Mercutio's it was enough" refers to the fatal stab wound Mercutio received from Juliet's cousin Tybalt.