Before, after or during? In your case I would have thought before with some disinfectant and antibacterial solution would be appropriate and use a condom, perhaps "double bagged"? And that's just for when you're having a J Arthur. Got to protect the environment.
Masky highlights a few words tha are above your pay grade BFB, no need to use them as your audience are not the brightest sandwiches in the lunchbox! I’m thinking IB and Clingy, not BT though he’s a very nice (albeit overweight) fella! Keep your expectations at a low level pal and remember that you are from Bridgend, twinned with Townhill!...no offence intended! Masky Of Llandaff