I'm a pilot not a FA but my daughter is one. I also fly regularly as SLF so perhaps I shouldn't be on here - but ......
A while ago I was pax with Cathay on a KTK - PER sector and had the unfortunate experience of having an Indonesian seaman plonk himself in the seat next to me. When they handed out the cool flannels he promptly unbuttoned his shirt and proceeded to de-BO his armpits, chest, stomach... ugh

Thankfully he didn't get to his nether regions
On another occasion I was flying a Malaga-Stansted sector as supernumery and wanted to get some video of my daughter in action in her role as Cabin Supervisor. I didn't want to make it obvious so I tried surreptitiously filming from the front galley. She then gets on the PA and announces "If anyone is wondering what that old bloke is doing with the video camera - it's my dad". Lots of loud cheers and clapping from the SLF