net zeromary-jane makes for fun in yet another way... if you consider having your gametes swimming properly fun...
A synthetic chemical based on those found in marijuana may fix a problem that, paradoxically, affects the sperm of cigarette smokers.
A new synthetic cannabinoid appears to restore the ability of the sperm to bind to the outside of human eggs. The finding is unexpected since smoking marijuana itself appears to decrease male fertility, the researchers say.
from the new scientistso... is that justification for smoking even more weed?
by the way, the menthol cigarettes thing is apparently not true. and according to the mayo clinic, gametes prefer not being cooked in baths, saunas and hot tubs, and your bike seat really could be messing you up.