Barry is ready to make the silent argument that Yamato's incident happened first and therefore he should be the one to start, when Cisco catches them.

Freezing in place, the idea crosses Barry's mind that all he has to do is hold still longer than Yamato and then the T-rex Cisco will get Yamato first.

Yamato making a terrible denial and then lobbing it back at Barry ruins that, and Barry tries then fails to keep it going before he relents.

"No, not doing anything. At all. It's all about the coffee. And y'know talking... about stuff. Couple things that happened, without you around."