**PYTHON: <strike>198</strike> 193 bytes**

    i,s,h,r,t="I'm ","Slim ","Shady","real ","lease stand up"
print i+s+h+". Yes, "+i+"the "+r+h+".\nAll you other "+s+h+"s are just imitating.\nSo, won't the "+r+s+h+" p"+t+"?\n"+"P"+t+'. P'+t+'.'