It's good to share your things with others.
Sally has a roommate who is getting ready for a date but has misplaced some make up.
Sally wants to recommend her favorite brand of make up.
Sally recommends the brand she uses and lets her roommate try some of her's now.
Sally tells her roommate what her favorite brand is and where to buy it.
The roommate feels more confident on the date having all her make up on.
The roommate has to go without the make up because of time constraints.