“Proof of concept“. It’s like “thinking out loud”. You can show people stuff without it needing to be any good. It makes the viewer of whatever it is you’re showing look at the big picture. For instance, this site. It’s a proof of concept. In the sight of a proof of concept, you can only respond affirmatively because the fact it’s infront of you is the proof. Can’t argue with proof of concept.
“That’s an A+ in my book“. Instead of saying “this is awesome” or “I love this”, you can say “this is an A+ in my book”. It shows a thorough understanding of academia which is very impressive to academics and brainiacs.
“Spur of the moment“. Got a nice ring to it. Plus it’s equestrian.
“___ is my favorite in the world“. Recently coined by sofia x, it shows that you’ve traversed the globe and have landed on your favorite version of whatever it is, over everything else on the planet. An opinion like that is not to be taken lightly.