Somebody told me a few months ago that the kids are calling it pressin’ these days.
“The two anlke salute”
“Drill’n the spider hole”
“Lay’n her on her back”
you know what
slip her one
mattress mambo
spear the bearded clam
get a bit of sharp and blunt
play at belly to belly
take a turn in Bushey Park
polish your arse on the top sheet
have a bit of hows-yer-father
bit of the other
go in and out like a fiddlers elbow
have a bit of slap and tickle
bury the baldy fella
splat the manfat
diddlin
nobbin
roger her rigid
shoot betwixt wind and water
…and a few for us girls
grooving for truffles
drinking from the hairy cup
doing the kit kat shuffle
saying hello to the man in the boat
My brother’s name is Robert. One of his favorite expressions is “Bobbing on the Rob knob.”
One time after finishing up with a girl I remembered hearing “hot beef injection” in The Simpsons and, finally realizing a possible meaning of the phrase, started laughing out loud. She got me to share what I was laughing about (damn females and their persuasive ways), and for the remainder of the time we dated she would occasionally whisper in my ear that needed wanted a “hot beef injection.”
Ridin’ the manroot
massage time
rutting
or one of the cutest (you have to be there… well, not there really… ummm, you get my point), “a lick and a promise”
I always liked Horitontalizing.
I just call it “I so KNOW you’re not asleep!” 
Depends on our mood too -
Hmm usually in descending order of most use:
Making love
Having sex
Fucking
Fooling around
Sleeping together
Riding (you/me) depending on whose talking about whom taking the active role
Bump & Grind
Having sex or (when drunk), “OK, honey, let’s go bang.”
Oh, and if I come into work tired, my coworker always says, “What? Too much humpin’ and bumpin’ last night, or what?” accompanied by that eloquent fist-smacking-the-other-palm gesture.
Wife and I frequently call it horking (Strange Brew ref for you movie hounds). With kids around we also call it gardening, making pancakes, and playing chess.
A few more Job Bob Briggs-isms:
Aardvarking.
Making the sign of the double-breasted Nehru jacket (if-you-know-what-I-mean-and-I-think-you-do).
Special Sharing
Intimate Exchanges
The Communion