When should you grab your girlfriend's butt?

when you are makeing out some girls ( not all girls) like it when you slowly squeeze ther "butt" and it can me a huge turn on if you pick them up by it and ther wrap ther leggs around your waist :) good luck ;) hope i helped

if you try the lifting make shure ur strong or you might no be able to support her and she will fall huge turn off