When you see someone writing on another persons wall, they clearly want to fuck them, but they're being too pussy and just internet fucking instead.
Guy - "HEY BABY YOU LOOKED SOOOO GOOD TONIGHT"
Girl - not even online
2 minutes later
Guy - "XOXOXOX"
Girl - still not online
Lurker - What a sad fuck, why doesn't he just shag her in real life instead of e-shagging her