Some bikes are "blessed" with a throttle that causes the bike to jerk around at slow speeds, my Triumph Speed Twin is one such machine as was my Ducati Panigale. If you have a modern Triumph or Ducati ...
It turns out the Panigale throttle has a bit of slack in it when you initially give it a twist and this can make the bike feel a bit "snatchy" or on or off, making it a bit tricky to control smoothly ...