Taking a cross-country road trip with your friends and can't quite remember that line you loved so much from Due Date? Don't worry, we've got a bunch of hilarious quotes from Robert Downey Jr. and Zach Galifianakis in our Due Date quotes gallery!

Check out a few of the film's most memorable lines below:

Ethan Tremblay: "Hold Sonny."
Peter Highman: "Nope! Hand me that dog and I will rip it in half!" | permalink

Peter Highman: "Number 2: if you're allergic to waffles, don't eat waffles!"
Ethan Tremblay: "Then don't take me to a waffle house!" | permalink

Ethan Tremblay: My father always had a saying "When a day starts like this it's all uphill from here.
Peter Highman: Uphill? No, it's all downhill from here.
Ethan Tremblay: But nobody wants to be down, everybody wants to be up. It's all uphill from here.
Peter Highman: But it's easier to go downhill. So your dad had no idea what the f**k he was talking about. | permalink

Border Crossing Agent: [from trailer ] Why are your eyes so glassy? You been partying?
Ethan Tremblay: No, I have glaucoma.
Border Crossing Agent: What about the dog? Does he have glaucoma? His eyes are glassy too. | permalink

Peter Highman: If I miss the birth of my own child, I'm gonna choke you out with your own scarf. Wrap that thing 'round your head, and choke you out.
Ethan Tremblay: Sounds a bit... drastic. | permalink