Tupac's love letter goes up for auction

Tupac wrote a love letter while he was in prison in 1995 that was so graphic and sexual it makes "50 Shades of Gray" look like a Disney movie.
The explicit letter, handwritten by Tupac features lines like,

"Ever been tied to a bedpost and licked like a lollipop?"  In it, Tupac mentions blindfolds, bubble baths, oily massages and "12 positions of lovemaking". Tupac once explained it was in response to a "passionate letter" a woman had sent him while he was in jail. Read it below.

Anyway, TMZ reports Goldin Auctions owner Ken Goldin is putting the letter on the auction block come Monday, and expects it go for at least $25k.