Sure, here's a sample description for a YouTube video featuring a try not to laugh challenge with funny baby videos:

"Get ready to witness the cutest and funniest baby moments in this hilarious compilation of funny baby videos! This is a try not to laugh challenge, and 99% of people fail! In this video, you'll see adorable babies doing hilarious things that are sure to make you laugh out loud.

From babies laughing at the simplest things to toddlers getting into all sorts of mischief, this video is packed with non-stop laughter. You'll see babies dancing, making funny faces, and even imitating their favorite animals.

Whether you're a parent or just in need of a good laugh, this video is sure to brighten your day. So sit back, relax, and see if you have what it takes to not laugh at these hilarious and adorable baby moments!"