I know you were trying to be a jackass with that advice, but rinsing your mouth with warm salt water is actually how most piercers (the ones who are up to date with the best aftercare techniques) recommend caring for a tongue piercing.
And yes, I have a pierced tongue, w/ an 8 gauge barbell in it. I plan to stretch it up to 4ga, eventually. (I have 9 other piercings as well : Graucho) I didn't do it for attention -- I did it because I was looking for a way to keep from cutting. When I have a new piercing or tat, I'm much less likely to cut...and since I'm, shall we say, orally fixated, I just like having the jewelry in my mouth to play with.
And as far as I can tell, it doesn't make any real difference when giving a blowjob or going down on a woman...unless you hold ice in your mouth first and get the top ball on the barbell really fucking cold...
