At work maintaining a section of hot tubs and regulating the chemical balance. Got to one lodge and no guests about so I went about my business doing what needed doing. One of the last tasks is to take the water temperature with a floating thermometer, so I've got the tub lid raised and resting on my head waiting for the probe to finish registering when I hear the sound of a couple of girls squealing near by. Holding the lid with one hand and thermometer, still in the water, with the other I peered over the top of the lid. Don't know who was more shocked, me or the girls, (young ladies in their 20's to early 30's I would say), who had come running from the lodge through the open patio doors to jump in the tub for a bit of fun. All 5 of them wearing the skimpiest bikinis I have ever set eyes on! Suffice to say I quickly made my apologies and exited to the sounds of laughter behind me. I bumped into 3 of them later on during my second round and they apologised for startling me. We had a good laugh about it though and they have promised me a coffee in the morning when I come to empty it.