Who was the first Soc to put Ponyboy's head in the fountain?

From the text, we can infer that David was the first Soc to put Ponyboy's head in the fountain.

Bob shook his head, smiling slowly. "You could use a bath, greaser. And a good working over. And we've got all night to do it. Give the kid a bath, David."
I ducked and tried to run for it, but the Soc caught my arm and twisted it behind my back, and shoved my face into the fountain.