Bleh!Nov 27 2013 6:04amFLAGWell, now that ive said that....
INANov 27 2013 6:06amFLAGGuys "get hard" when they are sexually aroused. Blood flows into their penis and clots so it doesn't flow back until needed.
DevinNov 27 2013 7:02amFLAGDevin is partially right, it does not cl*t tho, blood flows to a mans penis when sexually aroused or when an excess amount of testosterone is present in the body, the largest amount of testosterone is created (mostly my a mans testicles) at night and that is why men wake up with an erection usually also known as morning wood