Andy
You can't help yourself sometimes because making Andy arouse is something that makes you love doing it, you suck of your fingers in a seductive way after eating melted chocolate or after eating something delicious.
Felix
You'll sit in his lap but you'll move up and down purposely trying to find a comfortable spot which cause him to have a boner and you'll end up have to fix that for him.
Jake
Jake has no control when he's turn on but you always want to have fun so when you turn him on you just leave him and do everything in a seductive way causing him to lose control and take you.
Sam
He also has a hard time controlling himself when it comes on to you when he has a boner and he'll be rough.