my favorite d&d thing is when someone flubs like a really obvious perception roll or something and the dm gets to be like, “well, you’re pretty sure you’re in a room but you could be wrong”
it is either really wet or really dry, you’re not entirely sure
One time a guy in our party rolled a nat 20 on a perception check, but there was nothing around he didnt already see, so the DM said “You’re not quite sure, but for a few seconds it seems like you’re standing on a giant’s table, surrounded by 5 Giants. Your party seems to look stiff and fake, and Large papers and Dice are strewn around you. Then, everything goes back to normal.”
May's Blog 