Lucas had finished his sex altering juice. There were 2 chemicals: he would drink one that would open his genes up to alteration and the other one would set a second’s person sperm to act like a magnet of the same kind: pushing his hormones and body to the oposide sidef of the gene.
His friend wasn’t so easily bought. He put some porn on in the back and ignored Lucas.
When he finished, he looked down and saw Lucas had completely transformed and quite enjoyed it.