If you are looking for a gift for that funny friend that appreciates a little bit of toilet humor, this one will certainly make him smile. It is pretty polite and welcoming for anyone who enters the bathroom. You can get creative and hang it over the cat litter box or wherever else seems appropriate.
If you always worry about the door being locked properly, this is a great thing for you. Whether at home or at the hotel, it's easy to use, and you'll sleep better and safer.