To satisfy his sexual perversion, Jeffrey Doland flew to Miami to meet Kathy, a woman he met online who agreed to let him forcibly dunk her two young girls in a pool or bathtub ``until the bubbles stop rising,'' prosecutors say.

Not so, say Doland's defense attorneys -- they countered that the lonely tech worker was simply spinning Internet fiction in hopes of wooing a new love.

Neither side disputes this: There was no Kathy. And no preteen daughters named Kelly and Sam.

Doland was actually chatting with an undercover U.S. Secret Service agent and flew to Miami from his home in Ohio in July 2007 before he was hauled away in handcuffs.

His trial began Monday -- and the details left some jurors wide-eyed.

Doland, 47, a school district tech worker from Uniontown, Ohio, is charged with a slew of attempted sex and child abuse crimes. The make-believe victims were 12 and 9.

U.S. Secret Service Agency Eric Adams testified that, while posing as a single mother on the Yahoo chat room fetishes14, Doland offered him $500 to allow him to dunk the girls so he could achieve sexual gratification while wearing ``skimpy trunks.''

On Monday, prosecutors David Sherman and Charlie Johnson read the ``struggle and bubble'' chat entries from Doland, who acknowledged writing them under the screen name dunkingstool:

``Well thinking the girls would be cuffed and tied to a cement block dropped in the deep end.''

``I love long hair floating underwater. Cannot wait to see them drowning.''

``I was thinking about cuffing them to the pool bottom.''

Prosecutors said Doland lied to his wife -- saying he was going to Miami with a pal to dive.

At Miami International Airport, Doland met with a woman he believed was Kathy (it was actually an undercover female agent) and slipped her $501, prosecutors said.

He even suggested they buy Velcro straps because Doland, scared they would be confiscated by airport security, left his in Ohio.

Defense attorney Paul Donnelly countered that Doland, unhappy with his wife, never had any intentions to go through with the dangerous dunkings. He said Agent Adams led him to believe a romance was budding and Doland was simply ``guilty of stupidity.''

Added Donnelly: ``What went on in this fantasy land was never going to be played out.''