I think that a lot of the lyrics are left intentionally ambiguous. Personally, I think the whole Jay-Z semen thing is a bit of a stretch, but possible...I was thinking more along the lines of watermelon-flavored liqueur given the context of the song. But also, this is kind of far out, but I thought it might also be a cultural statement of Bey's profession for liking something that has been used to negatively stereotype blacks (i.e.: Black people liking watermelon). But knowing Beyonce, the world will never know.
That could also be a euphemism. Like when you're trying to be careful cause you don't have a towel on you and his stuff ends up on your clothes anyway.
I think it's a double entendre. She drops them all the time, it's just people don't always realize.
Only Beyonce knows. I love that the line has turned into some iconic mystery. Not since Carly Simon's "You're So Vain" has anyone tried to decipher 1 line so much.
It's an homage to the memory of Trayvon Martin. When they found the poor boy's body, he had a can of Arizona Watermelon fruit juice cocktail on his person, which he had just purchased shortly beforehand from a convenience store, along with some skittles.