why do some mosquitos hum and some are silent?

[dpopiz]

 

[Spoooon]

Some are just happy go lucky and enjoy a good tune, others not so much.

 

[Lager]

Why do some men get some, and some use their hand?

 

[StageLeft]

Those who aren't humming soon will be, sucking the blood from your neck like a pig at feeding. That's when you crush their little bodies and summarily wipe the blood from the palm of your hand.