small bump on both ear flaps

I was playing with my dog when i realized he had a small bump on both ears, at first i thought a mosquito bit him while he was outside but it doesn’t hurt him or anything when i touch it 

Hello - this one needs to be seen by a vet in context.  The cartilage does naturally bend and bump in some ears, particularly in breeds where the ear-canals are slightly closed-off, and I wonder whether this issue might be anatomical (ie. due to natural abnormal shape - 'normal for them.')  However, other causes may include insect bites, scratches and scrapes from an itchy ear, a skin fold natural to your dog that has some friction and therefore gets sore, a polyp or growth including various cancers and of course, any skin disease that causes such skim lesions in normal life eg demodex (none-itchy, hair-bulb dwelling) mites.  The issue may therefore range from being treatable with bathing and vaseline, to needing biopsies.  Please do see your vet.