Sumain is a person who is a native sign language user. In Spanish, 'Su' means 'Your' and in French, 'Main' means 'Hand' - therefore, "Your hands tell me that I exist". An identity based on sign language as well as spatial/visual/tactile fluency as opposed to "broken hearing".
Also, it means a person who has a keen spatial and visual intelligence.
A phrase that has obtained popular use in areas of the UK containing northerners, chavs, or rural folk. It means "something or whatever", usually used in an inquisitive sense or as a dismissal of lack of knowledge following an observation. Irritating to hear for anyone who speaks real English.
D'you wanna come dahn 'ere 'n watch summint or summat?
He was blatherin' on 'bout jobs or summint or summat, don't really give a fook.
It shot roight over t'hill, loike an alien or summint or summat! Roight fooken frit me.