There is a limit to how much meat a person can consume. If Jeff knew how much meat I eat he would reconsider his stance on the death penalty. I have enough meat and protein shakes in a day. I am trying to add a few more grams of it though. Any fruits or vegetables have protein? Anything?
Grean beans, brocoli and squash are considered protein substitutes in a diabetic diet (at least, in my wife's they were). I believe peanut butter has a good bit of protein also.
Nuts, beans (particularly soy beans), all dairy products, broccali, some potatoes and squash all have a lot of protein.
As long as we're talking about thick, white liquids, egg whites are perfect sources of protein, and they don't have the fat and cholesterol in the yolks. I dunno, you may consider that meat.
BTW - semen doesn't contain a lot of protien (read the last four paragrahs here: http://www.straightdope.com/classics/a1_054.html) You guys have been drinking it needlessly -- droxford