verb: To use a chair (see above) to deliver a beating or severely hurt someone. Usually, threats involving chairs are used by wannabe gangsters as a means to intimidate others.
What a comfy chair...I could play CS on this all day...
1: What the **** are you looking at?
2: (begins explaining that he means no harm, tries to calm (1) down)
1: SHUT UP OR I'LL CHAIR YA!
1: NAH, SHUT THE **** UP OR I'LL CHAIR YA RIGHT NOW!
Chair: They have a S and an E in their name