The complete sentence is: "I'm a security guard, I want to eat bear cookies, can you buy me"
The whole thing can be seen as having a hidden poem, which reads together as "I miss you". The origin of this terrier seems to be the security guards limerick, and security guards diary, is to imitate the security guards report work like writing a running account. At that time is also a very hot terrier, there are many emoticons. Mainly in the format of "x month x day, sunny, today's xth neighborhood patrol," a lot of people look at the imitation, secondary creation, and then passed into a limerick. Nowadays, young people usually express their feelings not directly, but very subtly. For example, the use of hidden poems is one of the ways to express feelings. Or the use of earthy love words to express their feelings.