Yes, spinners can bowl bouncers, and it has happened numerous times in cricket history. A spinner can bowl any sort of ball that other bowlers can bowl. There are no limitations. Depending on the circumstances of the match, spinners may bowl yorkers or bouncers. It all depends on what type of effect they want to achieve. Spin bowling was first introduced into test cricket by England's Edward "Teddy" Axon in 1877. He had a great success with his method which made batsmen play forward and miss out on their shots. This gave him plenty of opportunity to go after the balls in front of them and get wickets. His unique method proved very effective for about 10 years until another English spinner named Fred Morley came up with similar tactics of his own. After this, there were not many more spinners brought into test cricket until 1948 when Australia's Bill Johnston came up with some fast balls that jagged back in action - this started the era of the fast bowler. In local cricket, spinners are still used but not as often as fast bowlers. This is because faster balls do not break so easily and thus keep longer. Therefore, they are more effective in rain-affected conditions when the ball tends to stay low. In addition, spinners can manipulate the shot selection of batsmen by causing misses and hoicks.