"You have to use this water to cool yourself off!" one said.
Tom nodded.
Then another one of the girls said to her sister: "I bet he needs to cool off his cock, don't you think?"
"All guys need to cool off their cocks around us!" her sister answered.
"I wonder how long he can go without any water on his cock!" the third one said.
Tom did feel like his cock was getting overheated, and noticed that he already had a 10 reading on the hardness meter.