I forgot to bring my towel to work. 
Who woulda thunk? 
damn, I didn’t know, I will go buy a towel. how else would I get anyone to lend me a spacesuit?
You only need a bathrobe.
-Sent from the future.
All joking aside, I have a really nice Swiss Gear backpack I carry everywhere with me. My “male sack” as I call it. I keep a towel in it. Originally as a joke that pretty much only I and maybe one or two of my buddies got. I cannot tell you how many times I’ve used that towel. My best advice to anyone is know where your towel is!
Even better than knowing where your “male sack” is? :o