pull (someone's) leg

Translations
подшучивать над (кем-то)
I was just pulling your leg about the surprise party.
Я просто подшучивал над тобой насчет вечеринки-сюрприза.
Definitions
To tease or joke with someone in a playful manner, often by making them believe something that is not true.
Words
pull

verb
разыгрывать
someone

pronoun
кого-либо
s
притяжательный показатель
leg

noun
ногу