Quote from Marshall in The Rough Patch
Marshall: Are you sure they saw us? Lily: Yes. Meg: Hey! Can I go talk to Barney now? I'm so excited. Do you really think he's gonna propose to me? Ted: Oh, honey. Marshall: Forget it, Crazy Meg. We've been made. If we try anything now, they're gonna know it's us. I think we should all just go home. Lily: No! This is my masterpiece. So what if they saw us? It'll still work. Ted: Stop it! We'll think of something else.