At one point or another, everyone has had what Kathy Griffin calls the “church giggles.” Sometimes it’s just impossible to keep from laughing, even if you’re in the middle of a sermon. I work as a substitute teacher and I’ll admit, I’ve occasionally had trouble keeping a straight face when a student has said something particularly silly. I’ll try hard to avoid busting up, but sometimes I have to turn around and laugh silently against the chalkboard, hoping there’s no chalk dust on the back of my pants. It would stand to reason this would be even harder if you were in the presence of someone deeply, powerfully funny. That is exactly what happened with the professional entertainers in the following videos.

We all need a little pick-me-up sometimes, right? Luckily, the Internet is here to help—and we are here to help it help you. We have compiled the 10 most hilarious times when professionals just couldn’t keep from cracking up on live television. Try to keep a straight face while watching. Just try.