Vegetarian Semen according to this article:
[h=3]Semen Composition[/h] [h=4]Protein[/h] Semen contains both albumin (a protein structure) and free amino acids. The proteins come from the prostate whereas the amino acids from the seminal vesicles.[SUP]
[2][/SUP] A review of several studies found the average amount to be 5040mg/100mL whereas albumin consisted of 1550mg of the 5040mg. Although an overall percentage is impossible to calculate due to varying specific gravities of semen and protein content[SUP]
[3][/SUP] it is close to 50% protein by weight.
[h=4]Other substrates and properties[/h] There is about 2-5mg of fructose per mL seminal fluid[SUP]
[4][/SUP] and appears to be higher in men who are more fertile.[SUP]
[5][/SUP] Fructose is there as a fuel supply for sperm cells, and without fructose infertility would result.[SUP]
[6][/SUP] Breakdown of fructose via fructolysis (for energy consumption) may result in lactic acid production.[SUP]
[7][/SUP]
Semen is slightly alkaline, although varying significantly between 7.26 and 8.47; the fluctuation is due to varying content of citric acid, which ranges from 304mg/100mL to 678mg/100mL.[SUP]
[2][/SUP][SUP]
[8][/SUP]
The main three catecholamines (adrenaline, noradrenaline, dopamine) are also present in semen; their levels tend to correlate with beneficial semen parameters such as sperm count, motility and general fertility.[SUP]
[9][/SUP][SUP]
[10][/SUP] This also applies to the neurotransmitter
D-Aspartic Acid which is found in semen.[SUP]
[11][/SUP]
[h=3]Semen Taste[/h] [h=4]Diet and Vegetarians[/h] It has been 'reported' (the mother of all anecdotes) that vegetarian men are 'sweeter' than their omnivorous counterparts. Consumption of meat is associated with higher levels of uric acid/urate in the blood[SUP]
[12][/SUP] and, relative to meat consumption, serum uric acid is lower in vegetarians.[SUP]
[13][/SUP] Similar to its effects in the blood, uric acid is also an anti-oxidant found in semen to protect the sperm from oxidative damage and thus it exists in sperm[SUP]
[14][/SUP][SUP]
[15][/SUP] displaying a correlation with serum levels.[SUP]
[16][/SUP] Semen also displays a high Xanthine content, which is a structurally related compound to Uric Acid.[SUP]
[17][/SUP] This structural class, the xanthine-related molecules, are used as a research standard for the oral perception of bitter, such as 6-n-propylthiouracil (PROP)[SUP]
[18][/SUP] and
Caffeine.[SUP]
[19][/SUP] It is highly possible that a vegetarian diet results in reduced levels of uric acid in the semen, and the reduction in perceived bitterness allows an enhancement of the perceived sweetness from semen's fructose content (slightly sweeter than table sugar on a gram per gram basis).
When are you going to start taking them to they gym with you. 
