Well, put a curse on my brother quite a few times... if you met him, you'd understand me.
One time, I had a wart on my thumb, and I went to the doctor with my mother and brother, to get liquid Nitrogen poured on it. Now, I knew all about the physics of liquid nitrogen, and what it did to a tennis ball... brrr... and naturally, I was close to screaming and running out of the room. My dear brother, in his most senstive nature, began to laugh and taunt me as I cringed.
I shrieked, "Fine then! I curse you - you'll get lots of warts on your feet!"
A month later... my brother was in the showder, and the next thing, there was a yell and he ran out (not in the nude) and held up his soles. There were budding warts... ALL over the soles - not kidding - about thirty dark circles under the skin of the sole, and my mother confirmed that they were warts, and they would surface soon. My brother promptly burst into tears and begged me to take the curse off. The warts disappeared within a week... :eek!!!!:
There's so many more I can record, but that's one of the most freaky thing that happened.