Robin: Why are you acting like this?
Barney: Like what?
Robin: You're being super nice. It's... freaking me out. Be... gross, be inappropriate. Be Barney.
Barney: I'm being Barney, and I think tonight's going to be de--wait for it--lightful. Delightful!
This is probably the reason why I've been saying delightful all the time now.