LOL @ the suggestion he's injecting crack....
Here's what happened.
Charlie's dealer gave him a 2 gram rock and told him it was 3 grams. As drug addicts have a tendency for exagerration, 3 became 4 became 5 became 6 became 7. It's probably 10 grams by now.
Charlie put the 2 gram rock on his pipe, lit and inhaled then in his fucked up state set fire to the rock.
Charlie inhaled a regular rocks amount of rockiness, then took his flaccid penis over to the rent-a-pussy in the corner who failed in her attempts at resuscitation. He then called his few remaining friends to tell them how he'd been banging porn stars all morning.
This 'winning streak' lasted all the way till lunch time.