This is brilliant. Fucking brilliant. Science at its finest.
Well, um, Chronos, it might astonish you, but what you put in the cup is considered at least semi-ingestable by a large part of the population.
You should try it sometime.
One thought I now have: I hate to think of what you do with your Cleveland Browns souvenir cup.
Nice to see the SDMB back to its usual self.
Let us note that both degree of erection and degree of flaccidity are variables. What is alleged to be a flaccid penis may be one in, so to speak, dangling mode, but passably infused with blood – merely not sufficient blood to cause hydraulic erection to an erect state (I’m sorry if this is loaded with solecisms; you try phrasing it). Such a penis, while technically flaccid, is significantly larger in all dimensions than a penis fully drained of all erectile-tissue-resident blood, as when one is immersed in cold water. The Gaspode’s seemingly-well-endowed friend was one of those people who ordinarily does not go completely flaccid.
(I recall reading at one time, but suspect it to be merely urban legend, that one of the true physiological differences between black and white males was that there was a genetic tendency for whites to go truly flaccid, while blacks’ penises remained moderately infused as a general rule, and thus appeared larger, giving rise to the urban myth about black men having large penises. For what I hope are obvious reasons, I have not conducted a thorough investigation as to the truth of this matter. :))
Likewise, it’s been my own experience that an erect penis (mine, and the couple of times I’ve observed another male person through the full process of arriving at orgasm) comes to a state of engorgement and consequent erection at a given stage of stimulation, but grows marginally larger as it approaches orgasm and ejaculation.
He brings up a good point. There can also be different degrees of stimulation depending on how aroused/stimulated one is. I know mine can vary by a full quarter-inch when comparing me just looking down and saying “Oh look. I have a hard-on” and me watching porn/reading erotica for a while.
Threadjack
I read somewhere (or maybe I’m making it up) that an evolutionary dead end equipped early human males with wheels instead of legs. Unfortunately, it also equipped them with a six foot dick. They kept rolling over their own dongs and were consequentially crabby, irritable and impotent.
End threadjack
It’s because of threads like this that I finally had to pony up the money and join SDMB after lurking, off and on, for over a year. Witty banter, fun science, and Polycarp made me look up the meaning of a word. Oh, and Unca Cecil is Da Man. (It never hurts to suck up to the Mighty One. 
)
“CHRONOS! Why are you fucking your Cleveland Indians souvenir beverage cup? I hope you don’t expect me to drink from that later!”
consequently not consequentially (what the hell was I drin…thinking?)
Cock in a Cup…yeah, that is about the size of it alright…generally speaking, not of Seven per se. oh you know what I mean.
Cock in a Cup…good to the last drop.
Because a good joke must be beaten like a dead horse.
The Chronos Displacement Test sheds entirely new light on why that great Greek mathematician ran down the street naked shouting “Eureka!” after having discovered displacement!