Peace, peace, Mercutio, peace! Thou talk'st of nothing
O, then I see Queen Mab hath been with you...
O, she doth teach the torches to burn bright! -
Act 1 scene 4: Romeo and Benvolio meet up with Mercutio, and Mercutio is sputtering nonsense, talking about his literal dreams and such until Romeo asks him to stop.
Act 1 scene 5: Romeo and Benvolio get to the party, Tybalt notices Romeo, and wants to kill him, but old Capulet stops him. And Romeo the simp sees Juliet and falls in love with her by just looking at her.