It looks like a male pollen sack to me. When my ladies went into flowering I didn't see a "sack" or a "bud" at all. I noticed little white hairs and then an accumulation of bud around the hairs. It is tough to explain, but I hope that helps out some.

TehNoobletimp:
t3hn00b137 Reviewed by t3hn00b137 on . Confirmed male? Hiya guys, i'm new here. I've had 8 plants started from seed, various stages (planting was over course of about two weeks, and lighting didn't really kick in until 2 weeks in from start). Pretty sure i got a confirmed male here, but it's my biggest and strongest plant going so wanted to have you guys take a look. Rating: 5