gypsy toke
A rule-breaking intervention during the passing of a spliff, where a 'middle-man' (aiding the passing of the spliff from one person to another across a long distance) cheekily takes a toke of the spliff before passing it on.
<Dave> PING!
<Steve> PONG!
<Dave> Can someone pass this spliff to Steve? Can't reach him from here.
<Pete> Yeah, I will.
* Pete takes the spliff and has a quick toke before passing it on to Steve.
<Steve> Aaahh, gypsy toked! You bastard!!
<Pete> Sorry mate.
<Steve> PONG!
<Dave> Can someone pass this spliff to Steve? Can't reach him from here.
<Pete> Yeah, I will.
* Pete takes the spliff and has a quick toke before passing it on to Steve.
<Steve> Aaahh, gypsy toked! You bastard!!
<Pete> Sorry mate.