This is an amazing album, but kids under around 13 should only listen if they're mature enough. Lil Wayne doesn't take himself too seriously but many of his lyrics could be easily misinterpreted. The opening track "3-Peat" offers fine examples of some of the less appropriate lyrics, especially:
"Run up in the n*gga house and shoot his grandmother up"
"Get ya baby kidnapped and your baby muthaf*cked"
"Don't you ever fix your lips unless you 'bout to suck my d*ck, b*tch"
"I told my girl, when you f*ck me better f*ck me good"
and, my particular favourite,
"Two more inches I'd have been in a casket, according to the doctor I could've died in traffic".
On second thoughts, you might not want your kids listening to 3-Peat at all, even if it is the best song on the album.