You keep walking. You bump into something.
'Hey, watch where you're going!' says a weird voice.
'Yeah?' You say. 'Well watch where you put all that smoke!' The voice looks at you. 'Hey! You can be my apprentice!'
'I hardly even know you.' You say.
'But do you want to be my apprentice?' asks the voice. Turns out the voice belongs to some weird person, with flyaway hair. He's holding a staff, and looks like one of those wizards you see in movies.