Examples:

• I think we're barking up the wrong tree.
• Barking up the wrong tree, pal.
• Barking up the wrong tree, pal.
• Well, he used the expression "Barking up the wrong tree, " which is an English expression.
• Barking up the wrong tree, Filo. What do you mean?
• I know you do, Newbie, and I have been searching through this wonderful book that you gave me, trying to find the exact right speech to share with you, but alas, there's nothing in here on "Barking up the wrong tree, "
• For 40 years, you've been barking up the wrong tree.
• But, uh, I think you're barking up the wrong tree.
• You're barking up the wrong tree with this one, Liliom.
• You're so barking up the wrong tree right there, my friend.