Three word game ...

when lubricating stiff

 

and aching parts

 

don't bend over

 

in the shower

 

as the paramedics

 

find extraction impossible

 

of foreign objects

 

that have lodged

 

back to front

 

over under sideways

 

at Slack Bottom

 

by-the-sea

 

the tide marks

 

the optimum position

 

for smooth entry