"give a bird the lie"
Humor
Act 3,
Scene 1
Lines 114-129
Bottom
[Sings]
[The Fairy Queen Titania has been asleep on the edge of the stage since Oberon placed the love potion on her eyelids in the prior scene. She now wakes up and sees Bottom with the ass's head.]
Titania
Bottom
[Sings]
[Speaks to himself]
Bottom doesn’t realize that the song’s lyrics are just a joke, and he considers why anyone would take a cuckoo bird seriously. It's obvious to him that the bird doesn’t know what it’s talking about because it can’t be true that every man who passes by is a cuckold!