Sorry guys, but can anyone tell me what these are, they don’t hurt, they have been there for ages, and if I squeeze hard enough yellow stuff pushes out. Cheers

15 1

16 2

28 1

17 0

26 4

24 2

21 2

4 0

7 1

13 1

37 4

13 2

19 1

14 1

11 0

11 2