The two handed 'victory sign' hand singnal used as a derogatory in the northern UK, equivalent to a two handed 'flip off' in the US- instead of flashing the back of the hands with the middle finger extended, the index and middle fingers (the 'v') are displayed. Rumoured to have originated in medieval times as a taunt in the sense that one might take a man's sword, but he still has his two fingers to
draw back his bow, or, opposingly a reference to the battle at
Bannockburn (where archers were overwhelmed by mounted
swordsmen) that two bows (a more advanced technology at the time) are outmatched by a Scotsman.
A pedestrian crossing a Glasgow street having to
jump back to avoid a speeding auto might 'flash the vikkies' at the offending driver's
rear window (to be seen via the
rear view mirror) to express his displeasure.