How to pronounce “switch hook” in English

And I go, "Hey, that's cool, how much did that cost you?" And he goes, "Oh like five, six, seven bucks." And I said, "Let me show you a cool trick."So of course I asked him for a phone number and I just simply pulsed out on the switch hook, you know, the number I wanted to dial.His face turns red and he actually threw the phone across the room.