How "they" do it when it comes to sex: 

Accountants do it with Double Entry 
Acupuncturist do it with a small prick 
Ambulance driver comes quicker 
Australians do it Down Under 
Bach did it using the organ 
Bankers do it with interest 
Bartenders do it on the Rocks 
Batman does it using his Robin 
Bookeepers do it for the record 
Bosses delegate the task to others 
Chess players check their Mates 
Cops do it with cuffs 
DJs do it on request 
DJs do it in 4 hour shifts 
Deep-sea divers do it under extreme pressure 
Dentist do it orally 
Detectives do it under cover 
Don't do it with Bankers, most of them are Tellers 
Elevator men do it up and down 
Engineers do it to specifications 
Engineers do it to a first order approximation 
Firemen do it with a big hose 
Frank Sinatra do it his way 
Garbagemen come twice a week 
Gardeners do it on the bushes 
Gas attendants Pump all day 
Golfers do it in 18 holes 
Landlords do it every 1st of the month 
Managers make others do it 
Marketing reps do it on comission 
Pizza delivery man comes in 30 minutes or it's free 
Waiters and waitresses do it for tips 
Zoologists do it with animals