The act of spitting tuna from your tuna sandwhich all over your computer. Usually performed if any feeling of extreme and utter disgust and surprise arises or extreme cases of amusement. in order to tuna spit one must dwell on the matter at hand and ultimately realize the true amusement within the context. The pause of reflection usually takes approximately 3-6 seconds
"don't you think it's weird you have a tiny dick you fucking arse hole it's her choice just because you sleep with every infected bimbo that Is blind enought to some how get pleasure from you doesn't mean other people are that stupid and self hating."
.....
(laughs and performs TUNA SPIT)