A bit of the old Cunning Linguistics? 
A bit of the old Humpty Dumpty 
Baloney Bop 
Bumping uglies 
Bury the boner 
Bury the salami 
Driving the Hershey Highway 
I'd be up her like a rat up a drain pipe 
Hide the weasel 
Little Jack Horny 
Park the porpoise 
Poking the brown eye 
Put the lime in the coconut and shake it all up 
Riding the Dirt Trail 
Rumpleforeskin 
Sink the sub 
Taking the old log to the beaver 
Take the skinboat to tunatown 
Take a ride on the wild baloney pony 
The bone dancer 
The chocolate cha cha (anal sex) 
The horizontal bop 
The Horizontal Mambo, hmm?