If I have one, it's rarely turned on. The basic on campus use is fake conversations to drown out too much information from real ones. For instance, like when like I like hear like all like about like how like this like guy like doesn't like OMG like you like know like TOTALLY like treat like this like girl like who like can't like dump like him like 'cause like she's like not like as like much like a like bastard like as like him like and like stuff... I pull out the cell and begin screaming about bowel disorders and christ raping black metal until they suddenly change their route to diverge from mine.