Assuming you have the ability to hold a conversation with girls:
To get into their pants, is it a good strategy to treat them like children and show them no undeserved respect?
If you're not Chad, how to gauge the level of kindness to not revolt them, though?
"When in doubt, whip it out" to be honest, if a girl came over to your house "to chill" you legitimately just need to whip it out, unless you're like 4".
If so why are you even going for girls when you should be cding and taking it up the ass?