Personalized Biology Professor Powered By Chocolate Men's V-Neck T-Shirt. Funny Biology Professor occupation gift has job quote humor that says Biology Professor fueled by chocolate on a Men's V-Neck T-Shirt - White that makes a perfect career gift or Biology Professor retirement keepsake. 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem