"5" sounds like crying in Chinese. means sad, crying, especially in IM chatting.
tom: i'll not come back home for new year, sister!
me: 555555555555555555555!
22👍 23👎
friend one: ha3mel eh el nahrda yasta
friend two: ray7 23ot
friend one: 5555555555, ya 25y kosomk 3la kosom el ht3ot m3aha