It depends on your skin. If you take them out they will probably leave little divots, especially if they were in for long enough to actually start healing.
If they will leave big lumps, you will probably notice while they are healing with the labret still in.
Lips are pierced with barbells all the time, generally bent barbells for vertical labret piercings.
They feel like getting your ear pierced on your lip.
Dougie has had Many Piercings in the Past he has two ear Plugs in his ears in 2005 he got his lip Pierced and now he has his Nose Pierced.
Currently, I don't think she even has her ears pierced.... She had her lip done long ago but took it out... Also, she had (or maybe has) her nose pierced...
Any side you want, If you get your nose pierced on the left do the lip ring on.the opposite so it don't look dumb.
Mouth piercings are likely to close almost instantly once you take them out, no matter how long you have had them.
All piercings hurt it's mind over matter, if you don't mind it doesn't matter. Seriously it is not that bad.
There is no specific name for any piercing based on gender, aside from genital piercings of course. There is also no REAL term to differentiate between placements for lower lip piercings (though there are many slang terms), except it's based on how low on the lip it is. All lower lip piercings from about the middle region up to the lip are labret piercings, and any below that point are lowbrets. If you wish to be able to explain the placement, simply say "a left labret" "a labret on the left" or something similar.
I have both my lip and belly button pierced. I had my belly button pierced with a hoop and my lip pierced with a bar/stud. The belly button was more irritating then the lip because a hoop piercing requires the piercer to clamp it shut and fiddle around with a new pierced part instead of just screwing a ball on. I recommend any new piercings to be with a bar/stud as it is quicker and less irritating. Put it this way, I'm going for a 2nd lip piercing and not another belly button piercing ;)
On your lip...
I think she's got her belly button pierced as well as her ears.
Yes, I think that your son should get his ears pierced. My son is 13 and has two piercings in each ear. He loves them along with a lot of other people. My wife (obviously) has her ears pierced, but she also has a lip ring and a nose ring