I don't try to be funny, not saying that everyone else is but clearly they talk about changes regarding size of tires for this new season. And how funny they are once you seen them on actual track.
Second option (I know I said "they clearly talk.." but I gotta have a backup, what?) is that Max saying "last year you can be this close to car in front of you" and Jos doing some ...small correction on his son estimated distance.
Clear as mud.
Chris Horner: "Max, this year you and Daniel will receive a well-rounded car"
Max Verstappen: "NO! This year I want a well pointed car's nose to better pierce Kimi"
Max: "...and that's how much Vettel shat himself when I passed him on track this morning at turn 1."
Jos: "well, only this much really, but you could see the paint splatter on the Ferrari had a brown tint when Vettel came back into the pits the next lap."