ok so i was grappling with my brother just for fun earlier today. i was in his half guard and he was trying to set up a guillotine on his left side. he had his left arm over my head but couldnt get it around my neck because i had a hold of it. so with his right hand he grabbed my throat with his fingers and squeezed my adam's apple. naturally, i tapped and he let go. i personally think that it's illegal, but he insisted it was ok. i had to come on here to find out. and for his sake, he said he wasnt grabbing my throat, but pushing on it with his hand with the thumb over the adam's apple. now my question is, are either of those legal?