A really hot girl
Used to name a female who, in the opinion of the user of the word, seems to be extremely attractive and pleasuring to look at.
Katie: So, Alexander, what do you think of me?
Alexander: Well, Katie, I think you're A really hot girl
Katie: Oh well thank you so much Alexander. Maybe you would enjoy making out with me.
Alexander: Well of course
Alexander: Well, Katie, I think you're A really hot girl
Katie: Oh well thank you so much Alexander. Maybe you would enjoy making out with me.
Alexander: Well of course
Really Hot girl
One who is actually hot and doesn't wear undergarments and shows this in an unsluttish way, and protects her assets in the process.
Really hot girls: the ones who's breasts look nice, supported, plump, & perky in tank/sexy top, no droopy saggy. Also who wear tights/sexy pants skirts ,etc. that show enough while revealing a nice tight ass, no flat, saggy, droopy.