omg yesss, its super funn as they get way bigger than balloons! iv done it few times with mates , iv even sucked them ( flavoured ones ofc :p) and i also was considering having condom party with mates hahah WOOP WOOP :D
Well its not normal. but keep that activity away from your friends until both of you are drunk. then you can have all the inflated condom battles you want.
I lol'd at this question. But yeah it's normal, I did it a couple times when I was young. But now it would just seem like a HUGE waste of money being that they cost so damn much.
P.S. And also for pretending you are a cow and have udders.