I'm going to make out with this girl at a party.
Do you know the girl at all?
No, but I just want to have some fun.
You shouldn't make out with complete strangers, it could lead to trouble and make both of you feel uncomfortable afterward. Get to know her before you start making out with her.
I'm just going to make out with her, nothing else.
Well I suggest you make sure you are kissing someone that is not in a relationship nor have any ongoing sickness that she may pass on to you. I suggest that before you make out with her is to get to know her first instead of jumping right ahead to making out.