What are they?

We're headed to town yesterday and I finally get both kids bundled up and put them in the car. Here's our conversation that followed:

Logan: (scream) I have boobies all over me.
Me: You have what? ... boobies?

I look in the rearview mirror, he's slightly embarassed and realizes what he said doesn't make sense.

Logan: no booboos. I have booboos all over me.
Me: booboos, what are booboos? (I know, just trying to get him to explain)
Logan: I dont' know. (scream)

End of conversation. So...what are these "boobies" he had all over him? Post your guess in the comments. You do have to make a google account to leave a comment, but all it asks for is your email address. Thanks for playing!