You probably know the song's general melody and tone (standard guitar-bass-drums setup, lead singer with a moderately-high-pitched voice, short guitar solo in the bridge), so I'll skip the details and go straight into the lyrics, which I'd never really listened to in any sort of detail until tonight. Chances are you haven't either, although you likely know most of the chorus.
What comes next may well SHOCK you. (If you have young children who might read this, best just to gouge their eyes out now so they'll never be exposed to this sort of filth.)
* * * * * * *
Well, I'm hot blooded, check it and see
I got a fever of a hundred and three
Clearly, Foreigner vocalist and frontman Lou Gramm has some sort of viral infection. His temperature is 103°F (39.4°C), which is far over normal body temperature of 98.6°F (37.0°C). Someone should probably escort him to an emergency room — but Mr. Gramm has other things in mind.
Come on baby, do you do more than dance?
I'm hot blooded, I'm hot blooded
In his feverish delirium, Gramm has noticed a woman dancing. Gramm, blessed with a curious mind, wonders what else this woman ("baby") does beside dancing. I have a feeling he's going to try to find out.
You don't have to read my mind, to know what I have in mind
Honey you oughtta know
Apparently the woman he has encountered has presented herself as some sort of psychic seer.
Now you move so fine, let me lay it on the line
I thought perhaps Gramm was quoting Triumph's "Lay It On The Line" — but no, Foreigner's Double Vision album (from which this song is taken) was released in 1978, and Triumph's Just a Game came out the following year, so that's not it. Instead, he merely wants to make a proposition to this dancer.
I wanna know what you're doin' after the show
Even though Gramm is highly feverish, he wants to make this dancer's acquaintance after the show in which he is currently playing, as a member of Foreigner. Talk about breaking the fourth wall!
Now it's up to you, we can make a secret rendezvous
Just me and you, I'll show you lovin' like you never knew
Not only is Gramm physically ill, he openly professes to be a type of sexual deviant, promising an encounter "like [she] never knew." Nevermind the mis-match in verb tense here; Lou Gramm is a pervert.
If it feels alright, maybe you can stay all night
Shall I leave you my key?
This quote clearly demonstrates that the song was written (by already-noted pervert Gramm and guitarist/producer Mick Jones, of unknown sexual deviousness) before the era of magnetic swipe-cards in hotels, rather than physical keys.
But you've got to give me a sign, come on girl, some kind of sign
Tell me, are you hot mama? You sure look that way to me
Gramm knows his viral infection is contagious, and he begins to see signs of it in others: namely, the dancer. Is the hotel room key an invitation for her to join him for some soothing herbal tea and perhaps some Vicks Vapo-Rub, in an attempt to relieve themselves of the symptoms of the disease? We may never know.
Are you old enough? Will you be ready when I call your bluff?
Yet another facet to Gramm's perversion: he is a pederast. His attraction to exceptionally young women should land him on some sort of police-maintained list, like "The Jesus" from The Big Lebowski.
Is my timing right? Did you save your love for me tonight?
This doesn't take a rocket scientist: Lou Gramm is a pervert who is obsessed with deflowering virgin women.
Now it's up to you, can we make a secret rendezvous?
Oh, before we do, you'll have to get away from you know who
No, I don't know who. Jonathan Taylor Thomas, maybe?
Hot blooded, every night
Hot blooded, you're looking so tight
Hot blooded, now you're driving me wild
Hot blooded, I'm so hot for you, child
"Tight"? "Child"? This sickens me.
Hot blooded, I'm a little bit high
Hot blooded, you're a little bit shy
Might as well throw "drug addict" in there on top of the pederasty, the sexual deviancy, and the viral infection.
Hot blooded, you're making me sing
Hot blooded, for your sweet sweet thing
I'm fucking disgusted.
* * * * * * *
So, in conclusion, keep Lou Gramm's feverish mitts well away from all barely-pubescent virginal teenage girls who attend Foreigner concerts.