A name you call your mate who openly enjoys taking a dump in a toilet, leaving streak marks around the bowl, and is against using the toilet brush to clean it up.
"Seriously, Streaks, you have to start brushing afterwards"
"There's no toilet brush in here, Streaks would have a field day"
It’s just a poor excuse people use to stay in contact by sending pictures of their wall or some shit or someone who is forced to take a picture of a zoomed in low resolution picture of the floor to keep a streak number up