...en, and the bank's security guards were all men. Robin took the glass vial containing the blue liquid and began to pour it onto the slide for the microscope. Right as the drop of liquid was about to come out, a bat flew past Robin's head, and he reflexively flinched. As he did so, half the vial spilled on his hand, and he'd taken off his gloves, as it was warm and humid in the Batcave. He moved to wipe off the liquid, but it seemed to evaporate before his eyes mere seconds after coming into contact with his skin.
Little did he know that the liquid did not evaporate; rather, it was absorbed into his skin and bloodstream. The liquid automatically effected him in the following ways: it enlarged his dick by 2 inches (for a total of 7.7 inches when erect), it gave him the ability to have sex for a long time without cumming, it rendered him sterile, unless his brainwaves told the chemical that he wanted to reproduce, and it made any woman who he was attracted to more attracted to him. It also made it so that his semen was addictive, although women would show no physical side effects if they went a while without it, and it would give women instant, powerful orgasms the minute he came in them. It also made women addicted to his cum horny more often. All of this, of course, was unbeknownst to Robin, who finished his analysis in time for Batman's arrival at the Batcave.