Is it normal to get aroused from spitting food?

Yesterday I got a large beverages delivery (a great online service from a supermarket, I always order like this every 3 or 4 months) and this time they gave me 24 medium sized doughnuts for free. I am already way to fat in my opinion but I couldn't throw- or give them away. I decided to just chew and spit them as if I had this eating disorder, gotta say it doesn't feel disgusting at all but it also can't be compared to eating. Well, after spitting like 8 doughnuts I started to get a hard-on and I had to think about healthy, fat, plump girls with gorgeous body parts and how they would eat all of these doughnut and well yeah. I had to continue spitting food and wanking off, It was a pretty stronge urge and in the end I obviously came. I feel fucking weird now what the hell was that? Usually I don't eat sweets, I just like a good meal and don't do sports. And I am not obsessed with fat girls too, I mean at least I thought.