The only time he ever giggled was in 7th year, and unfortunately, was also in front of his girlfriend.

Of course, it wasn't a giggle. James Potter didn't giggle, for Merlin's sake. Giggling was a girly thing to do. The noise he made was a chuckle.

An incredibly deep, manly chuckle. Duh.

But Lily was adamant, and she wouldn't be swayed -- as far as she was concerned, James Potter had giggled.

And let me tell you, she giggled about that for a very long time.