A tampon. He mentions "O.B. Super Plus is [his] favorite." (I use the male pronoun instead of "it" because he doesn't get any pronoun other than "he/him," ever.) O.B. is a brand of tampons--not sure if they have them in AU--that don't come with applicators; they're designed by OB/GYNs (hence the name) and you use your finger to insert them, the idea being it's easier to find the right spot that way. A lot of young women, including myself, used O.B. as our first tampons for that very reason. Others use them because no applicator = less waste.