What happens when you put your finger in your horses ear

Yeah I was cuddling with my horsey Giddish and she really liked the earmassage xD. She s 6, but at heart she s still a filly. The shetty (she s really big for a shetty but standing next to her was sleeping xD. Giddish isn t techically my horse, but I ride her and take care of her cause the owners don t have enough time. It was raining today so I decided to just stick to cuddling in stead of riding and she didn t mind at all :).