First off, I'll tell you what is absolutely normal...
When jerking off with friends, simply think about how normal it is and the chances are it'll be perfectly bloody normal!
Next, a definitive answer to an age-old conundrum:
To summarise: no, giving semen to your short girlfriend will probably not make her taller.
Hey all you under-confident sex-pests, listen up!
So just remember, bashful rapists -- if you want to grope someone, propose to them first!
A 26-year-old virgin writes:
"If it does its duty and then goes back to looking like a tortoise head it is fine." I mean, that just sounds like the kind of thing a doctor says.
And finally, because it's not all biology and saving lives in the online Indian sex advice sector, a little joke for you:
Ah, that is the height of being realistic! Absolutely bloody classic!