...I just realized that I totally missed the point...actually thinking you meant a real periscope!!!
Yeah, I didn't want to be blatantly rude/naughty... so "periscope" fitted the bill nicely. 
on tuesday morning i was walking down the road, listening to mozart on my media player, when out of nowhere came a great big............
.... naked woman with gigantic boobs and nearly knocked me over as shimmering mounds of flesh bounced around completely unfettered.
Yup, true story! It happened to me one balmy summer's night a couple of years ago. I was taking a casual stroll in the cooler evening air to go pick up some bread and milk, when suddenly this stark naked woman came flying out of somebody's driveway and ran smack bang right into me.
Now I'd often joked to mrs starkers about large breasted (Dolly Partonesque) women: "Boxing my ears with those anytime", but never even in my wildest dreams did I ever expect one to actually do it.
