A popular sound in yaoi or gay anime/manga. It's most likely the sound of a character climaxing when being fingered another character. It can also be replaced with *splurge*or *splooge* and will also most likely me surrounded by a "*"
When a girl is on her period and all of the sudden she can feel this flow of juices (blood). It is normally silent but it is the most disgusting feeling in the world. Every girl who bleeds knows what this feeling is. No freaking joke.