The goal is to keep a conversation going.
The first person posts a few letters, which stands for a sentence they made up. (So, if you are thinking 'I want ketchup', you'd post 'IWK') They don't tell you what it means. The second person then posts a sentence where each word starts with the letter of the acronym of the sentence the person above them posted. (IWK=I Wash Knights.) Then that person thinks of a sentence that has something to do with the acronym sentence. They only post the first letters of it. The next person then makes a sentence out of those letters, but it has to have something to do with washing or knights. That way, they keep a conversation going.
Yeah...maybe an example will help. sweatdrop
Person 1
ILWS
Person2
I like watermelon seeds.
DYAET?
DYAET?
Person 3
Do you actually eat them?
ITWSAT
ITWSAT
Person 4
I think watermelon seeds are tasty.
ILTWBT
ILTWBT
Person 5
I like the watermelon better though.
FIGFY
FIGFY