er... u try sit at the back of your seat, till yur butt got
touch the pillion seat like that, then use yur knees kiap the fuel
tank loh.
like this quite ok but after a few days your LP area will be quite
sore... coz the muscles there rarely used one mah, u go XXX oso use
waist muscles, not the muscles in that area. hehehe 
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vroom...tingtingtingtingti...vroom~