I Was Fully Pantsed

I coach a women's soccer team and anybody who's ever been on one will tell you pantsing is a very common occurrence among the players, I coach women's rugby too but they don't really do it. I am the only man involved with the squad and started coaching them when I was just 15 so I was exempt from the pantsing for a while. That was until I turned 17. We had training on my birthday and when I was explaining a drill I asked were there any questions and I noticed lots of the women were giggling one of them then asked 'boxers or briefs?' I was puzzled, then I felt a tug, a girl had snuck behind me and had just pulled down my shorts, but my underwear had come with it exposing me to the whole team. It was very embarrassing but they had got a cake for me for after training so all was forgiven.