pull the leg of

Từ điển WordNet v3.1 - WordNet Dictionary

verb

tell false information to for fun (Freq. 2)
- Are you pulling my leg?
• Syn:
kid
• Hypernyms:
gull, dupe, slang, befool, cod,
fool, put on, take in, put one over, put one across
• Verb Frames:
- Somebody ----s somebody