'You can count on it' basically means that you can rely on something. It could even be a life and death matter. Sometimes used sarcastically.
No, I can't. You stole my underwear. -_- Not only did you steal my underwear, you took advantage of my grandmother and stole her wheat thins. She was going to eat those... You're a butt face, I hope...
A count does absolutely nothing and dies of starvation. =D
Ions have an imbalance of charge, with either an excess or shortage of electrons.
High count sperm is very sticky almost like glue maybe a little less, but low count would be more clearish and less sticky.