There's a lot of factors that determine whether a driveshaft/joint is tight or floppy - they're much like women in that respect.
Also, if there is a slight 'clicking', or they're a bit tight you may find they just need lubing up - both women and CV joints again.
Do bear in mind that your CV joints won't respond to dirty talk, and please don't confuse CV grease with KY Jelly, the consequences could be disasterous and totally change your thoughts on how 'dirty' a woman is.
I'll get me coat, shall I?