Venus implements one long triple entendre:
Venus, the planet, as to take advantage of outer space metaphors.
Venus, the Roman god of love, sex, and fertility. Religion, baby.
Venus, the vagina. Gaga loves singing about sex. This is alluded into the 'bat' single cover.
This represents Gaga's desire to reach an 'out of this world' climax, so powerful they blast into an alternative universe:
Let’s blast off to a new dimension (in your bedroom)
Venus
This represents Gaga's desire to initiate sexual intercourse, and establish "communication" with her 'godly' lover:
I can’t help the way I’m feeling
Goddess of love, please take me to your leader
I can’t help, I keep on dancing
Goddess of Love! Goddess of Love!
This represents Gaga's desire to reach climax, "la petite mort", French for 'the little death' (first line):
When you touch me, I die
Just a little inside
I wonder if this could be love
This could be love
Cuz you’re out of this world
Galaxy, space, and time
I wonder if this could be love
(Venus)
This represents Gaga's desire to increase sexual arousal, the simplest verse in the entire song:
Have an oyster, baby
It’s Aphrod-isy
Act sleazy
Venus
No penis, whatsoever.