It depends:
Cold day riding scooter with bike shorts: About 2x3! OUCH! Brrr....
Nice warm day working in the garden wearing tan-thru briefs: 4x4
While dancing with a pretty lady, and all that (call it half-hard): 5x4
Hard (US standard grade stiffie, like on a BJ): 5x5
Pumped without much time or effort, or after lots of sex: 5.5 x 5.5
Pumped with care: 5.5 x 6
Overpumped: 6x7 at the "donut" or more, but you wouldn't want to play with that...it was a one-time mistake. I just about got stuck in the damn apparatus.
I am an E99 on the old They Fit condom scale. Planned Parenthood recommended the Maxx for me. Those and Magnum seem to fit. I miss They Fit...
I am on the shorter, fatter side of the "normal". Both my partners say "Yeah! Pump it! Girth makes mirth!" Hee, hee.
Gotta renew my profile....kind of tight on credit card money these days. Nice to see you all again.
Thanks for askin'!