The process of woman stroking a mans penis, causing pleasure. But, on those cold lonely nights one has no other choice but to give himself some H-time, H obviously standing for hand.
See other "times"
"....nah all it was, was a little H-time"
"Yo, she didn't know how to handle the H-time so i had to instruct her"
"Yo it was shat, I was so unsatisfied with her preformance i smacked her in the face then H-timed it in her face"