After a series of MRIs to investigate an unclear brainscan, a friend relates the following:

Friend: woohoo! i don't have an aneurysm!!!! or a tumor!
Me: yay!! do they know what it was?
Friend: lol. yes. a FAT VEIN. i'm a fathead
Friend: better to have a fat vein than a fat anything else...
Me: are there any potential health risks from being a fathead?
Friend: nope.
Me: whew!!
Friend: i'm just a freak
Me: well, yeah. and you have a fat vein :D
Friend: [Friend's name] - now with 25% more!