When you have been eating a lot of salt, or 'cloggy' foods, and you have a drink of either coke or pepsi. A sloke is the feeling you get down your throat when you drink it. A cold chilling fizzy sensation that cures all your dehydrated clogginess.
'I need a sloke after that pizza!'
'The way it slokes down my throat...incredible'
'Bursting for a sloke i swear! I'm so dehydrated :('