Is it normal that i like to tickle my butthole?

Ive been jacking off for a long time now and i find it to be less exciting than i use to. ive been trying to masturbate to new things like double anal and shemales but none of it is really making my penis tingle like it should. so i started tickling my butthole while i jack off and i LOVE it. the way my finger feels as it brushes my little butthole hairs, the other day i came so much that some got in my own eye. i'm just wondering if its normal to tickle your butthole while jacking off. does anybody have an opinion?