These keep appearing on my thigh, and I try to remove them, but they keep appearing. What are these? (NSFW for pic being taken near butt.)

4 0

45 34

17 10

24 32

10 30

15 30

6 10

6 30

24 32

25 31

29 34

13 10

11 31

13 10

5 30

13 30