[Lewwy]

pawn Code:

ApplyAnimation(playerid, "PED", "IDLE_CHAT", 4.0, 0, 0, 0, 0, 0, 1); // onplayertext or whatever
SetTimerEx("StopChat", 1000, false, "i", playerid);

forward StopChat(playerid); // bottom of your script
public StopChat(playerid)
{
     return ClearAnimations(playerid);
}

Works for sure, used to be on my server. I know it's not efficient, this code is from a really old script when my code wasn't really efficient at all.
I know it's too much code for one line, but it works.