천막효과


> [Untitled](http://down.humoruniv.com/hwiparambbs/data/pds/a_4169335232_82191c528986b84235947603ff553c0bd9f392b8.jpg)



> [행복한 유머, 웃긴대학에 오셨습니다 !!](http://web.humoruniv.com/board/humor/read.html?table=pds&number=881411)
