Examples:

• No, but I have a report card that'll knock your socks off.
• You know, you may not buy into it, Paulie, but I have seen things over the years that would knock your socks off.
• I have slipped into something that will knock your socks off.
• I do one that'll knock your socks off.
• Well, I have and it will knock your socks off!
• Attention: This recipe is going to knock your socks off!
• I got something to tell you that'll knock your socks off.
• She has a new album coming out that is gonna knock your socks off.
• You said to knock your socks off.
• This is gonna knock your socks off.