Adjective. Used when something is so sexually awesome that words you arlready know are not good enough. Helps make every day lingo more sexual. aak
"That new book I'm reading is testosteriffic ! It gives me such a boner."
"We saw that movie last night. It was so testosteriffic I played tug-o-war with the cyclops during it."
"Dude did you just take your car through the car wash? It looks testosteriffic !"