The theme from Bonanza
STOP!!!
In the name of love…
Come on Eileen
Unless, of course, her name is Eileen.
In that case…fire away!
Lola (even if her name is Lola. In fact especialy if her name is Lola)
The Minute Waltz
That Smell
Baby Got Back
For the ladies:
It’s A Small World
Is That All There Is?
“I need a lover that won’t drive me crazy.”… hell i get looks even if i just whistle that around the house
"If i only had a brain " can work a couple ways… be careful
Springtime for Hitler
Comfortably Numb(actually, pretty much anything from The Wall)
Whistling the theme from the Good, the Bad, and the Ugly might be considered tacky.
How about that Sousa march they play at the beginning of Monty Python’s Flying Circus?
I fell into a burning ring of fire… :eek:
50 ways to leave your lover
Leavin’ on a jet plane
I’m just a girl who cain’t say nnnn… nnuuu… nnnaaaa…
Creep by Radiohead
Jeremy by Pearl Jam
Theme song from Transformers: The Motion Picture.
Anything by the Meatmen or The Mentors, Misfits, or Dayglo Abortions – but esspecially NEVER EVER EVER HUM THIS SONG WHILE MAKING LOVE —> Code Blue by TSOL
On the other hand, you might want to sing : The Mighty Mouse Song.
“Here I come!
To save th daaaayy!” 
Here he comes, here come Speed Racer…
This isn’t a case of while making love, but a humorous coincidince (?). I went to a cousin’s wedding rehersal dinner. The place had muzak piped in. While I was there, they played the Muzak version of “Fifity ways to leave your lover”
My Ding-a-ling
Ave Maria
Baby Elephant Walk
the theme from Thundercats
Anything from Wesley Willis’s catalog, for starters.
“What do you mean, you whooped Spider-Man’s ass?”
You can’t hiiiiiiiiiide your lyin’ eyes
and your smiiiiiiiile is a thin disguise
I thought by noooooooooow you’d realize
There ain’t no way to hide your lyin’ eyes
I would also suggest that there’s a solid 50% of all country songs that would fall into this category as well.