well if you have a litte ball under under where the leaf-stems attach to your main stem the size of a small seed and there are not 2 whit pistles or hairs coming out of it its a male
trust me i have seen way to many of them.... i was growing 12 plants and all except 1 where males.. its not that hard to miss
(denile is more common)
some males only have balls attached to there main stem, but others can have them grow every where a leafs-stem is attached to a larger branch
i had both kinds of fucken"not yelling at u it just brings back bad memories" MALES