Sneaky thinking

A mall cafe is pestered by teenagers who come in, buy a single cup of coffee, and stay for hours, and thus cut down on available space for other customers. How does the owner get rid of them, quite legally?

所有跟帖： 

• The owner say :"There is great 劍客show by the xxx square,free"... -jinjing- ♀ (89 bytes) () 10/26/2010 postreply 18:47:20

• Play classical music very lound... -好象- ♂ (0 bytes) () 10/27/2010 postreply 16:40:31

• such as bei jing opera.. -好象- ♂ (0 bytes) () 10/27/2010 postreply 16:49:04

• 好題 -guest007- ♀ (234 bytes) () 10/27/2010 postreply 16:43:11

• 這個題的答案巧妙，但我不會貼出來 - 高人出招吧 -巡天劍客- ♂ (0 bytes) () 10/28/2010 postreply 15:07:08

• Sell a little wine or play a rated film on the wall screen -好象- ♂ (44 bytes) () 10/28/2010 postreply 18:15:16

• good answer, but -guest007- ♀ (89 bytes) () 10/29/2010 postreply 04:35:28

• 需要答案嗎？ -巡天劍客- ♂ (672 bytes) () 11/13/2010 postreply 15:13:54