when we come back, ronny chieng takes us into the world of debating donald trump.back. ♪ hershey's. the original cookies n' crème. 'the black bear school' of chess. speed players. trash talkers. you wanna come inside my house - how about i come in your house! and through defeat, he learned... ♪ you can beat every bear in the forest, but the game is never finished. ♪ everyone said i was crazy. when i started this commute, but the game is never finished. so fifteen years ago, i got my first subaru and i did it anyway. for more than five hundred thousand miles, my outback always got me there. so when it was time, of course i got a new one. because my kids still need me. and i need them. (vo) welcome to the 2020 subaru outback. the most reliable outback ever. go where love takes you. show. joe biden has spent a lot of time preparing for the debate tonight. but how do you prepare for a 90-minute conversation with donald trump? well, our very own ronny chieng talked about it with a debate expert who had a personal experience. check it out. >> it's finally debate night. t

well, here to help me answer it is our own communications expert, an actual chinese person, ronny chienge, man. when you speak chinese, does this word that sounds exactly like the "n" word pop up because i've never heard you use it? >> well, i don't know because i don't speak chinese. >> trevor: oh. well, i thought you did. >> oh, yeah? why would you think that? why? why would you think that? >> trevor: no, because, i mean, because like -- >> no, no, what. what about me makes you think i could speak chinese? >> trevor: i didn't mean to offend you, ronny, i'm sorry. >> just (~bleep ) you. of course i speak chinese. i'm chinese. anyway, trevor, this whole thing has gone out of hand. there's no reason to be offended. that word is a chinese word. >> trevor: wait, hold up. the chinese invented the "n" word? >> no, you idiot! racists invented the "n" word. the chinese word ney-ga is our word for "that." it's a filler word. hey, what's the name of the bread sticks, i would say, ( speaking chinese ) >> with bread sticks. >> trevor: all i theard r heard you saying was nÈi ge, nei ge, nÈi ge in th