Somebody who posts too many Tweets on Twitter. They post about everything that happens in their life. Your Twitter dashboard is consumed by Tweets from this ONE PERSON.
A person who runs out of their supply of shampoo or other hair products and is forced to used their friends shampoo until they are able to come up with the allotted amount of money needed for new shampoo
"Dave, have you been using my shampoo?"
"Yeah but only for a few days..."
"Dude get your own shampoo you stupid shampoo tweaker"