Translation:Please stand up.
Cause I'm Slim Shady, yes I'm the real Shady! All the other Slim Shady's are just imitating!
Note that grammatically ください should be written in kana when used as a helping verb, but many Japanese people do write it in kanji.
Stem form of the verb is たてる? Sorry for not disrupting the Eminem shout-outs.
I think it would be 立つ (tatsu) in this case. The -te form of 立てる (tateru) would be 立てて (tatete).