It looks like FreakyJoe has decided not to tell us what his sound was.... in my day we would've flogged Johnny Foreigner for less. Anyway I'll resume play with another sound... get guessing, boys and girls! schlee crup crup crup
These are all very good guesses, but unfortunately nobody's got it yet. Think more, kind of ... slimy and tacky.
I can't believe nobody got this one ... it was me pulling my legs out of a boggy swamp, getting on to dry land and walking away with soggy shoes. Clearly! OK, try: ping ... ping-oing ... boioing ... waaaaaah BANG