Seriously.
Haploid.
Seriously.
Humphrey ?
Hannibal ?
Halitosis?
Really?
Haploid! Great answer! It means that he only had one set of chromosomes which is in direct opposition for sexual life. If I remember my college biology only asexual creatures can be haploid.
I don’t have anything further to add. 
Halosporting
Horatio
Howard, after his Dad.
You know, Our Father Howard in heaven…
I had a black friend tell me once that it stook for “honkey” (or however you spell it) 
According to this parody website and group, it stands for Hank.
THAT is fucking priceless. Top notch!!!
Nah, it stands for Hallmark, 'cuz God cared enough to send the very best.
I was going to post something smartass, but after Howard and Hallmark, anything I was going to post just sounds lame now …
Good ones, guys!
Hashimoto
The master did a column on this.
Harold
As in “Harold be thy name.”
holy
“Happy”
“Hound Dog” as in Jesus “Hound Dog” Christ for the blues band he jams with Friday nights.
I wonder who really knows the answer.
This is less of a puzzle to me than the identity of “Round John Virgin” from the well known Christmas carol.
Hweertdydasbbfmfisuudhjqwvxxtyhfiusoplgflvmkndhu.
Pronounced as “Bob”.