The sudden curtain of water causes Stan to frown at it irritatedly.  "Well," he says out loud, "looks like we're waiting here until Syl reaches those black squares."  He then turned to his other companions.  "Well, Mathew, if you could hold onto Kera as she shot her ton...  unless..."  Cutting off mid-sentence, Stan then leaned forward.  Only enough so that when he blew, his breath could reach the waterfall.