I am not quite sure I understand, but I will try to help. You could preposition someone, such as a social gathering, by asking, "What about drinks?" It is understood, that one party is suggesting to the other, that they meet at a certain location to drink with one another. What about drinking? Would be more of a suggestion, or a question one asks someone who is trying to get information. Example, "I like soda." What about drinking water, lemonade, tea" Or, if someone said (unfortunately if it is a lot) You drink a lot..."What about drinking?" Could be a response. I hope that this helps!