You can say, "I'm going to throw a pool party this weekend, so can you give me a 'ballpark figure' of how many people are going to come? " What does it mean? Watch here. For more videos - go to www.khmer.voanews.com/maniandmori or www.youtube.com/KhmerSpecialEnglish. To contact Mani & Mori - write to them at email@example.com.