Instead of "Ow" or "Ouch"...

[Rice Cake]

I laaugh at myself for being stupid enough to get hurt

[Twisted Tinkerbell]

I hiss, I swear, and I generally attack whatever hurt me.

[Alive-Cat]

I DO go, "Owwwww..." in a sad, hurt voice, and then usually state that I am hurt, "That hurt..." and then most of the time I ask the object what had I done to make it want to do such a thing.

[Tavrobel]

Many an inappropriate interjection has escaped my mouth. Definitely would get banned if I list them.

[Spammerman]

suck air in and say mmmmmmmmmmm, in a painful tone.

[Psydekick]

oh <!--*snip* or bummer

do not go around the sweat filter -eestlinc

[Mirage]

I either supress it, making a "ngh" sound or shout out "DAMAGE" or "PAIN".

[Yuffie514]

i use both, with an exception of another curse word...

[Reles]

I actually don't think I curse when I get hurt. I work with little children at a toy counter in an arcade, so I kind of have to leave my potty mouth at home, and most of my injuries come from work.

[Levian]

I usually just curse. Or if it's just a sting, I usually say Ævve. It's semi common in Norway, a play on the oh so popular phrase "Au".

[Doomie]

No joke, it's usually along the lines of: <!--OH smurfING [img]/xxx.gif[/img][img]/xxx.gif[/img][img]/xxx.gif[/img][img]/xxx.gif[/img] WHAT THE smurf! MOTHERsmurfER! smurf YOU GOD, YOU MOTHERsmurfER. YOU smurfING DID THIS TO ME!-->*snip*

It varies on the amount of pain.

was that really necessary? -eestlinc

[Fonzie]

I break into dance.

[Faris]

No joke, it's usually along the lines of: *snip*

It varies on the amount of pain.

Yes.

[Jessweeee♪]

I say smurf. no that's not a censor. that's little blue people with white hats.

or I say Kweh!

[Ramza Beoulve]

I try to silence the anger, I laugh, or an "ay", or curse like the mexican way XD