Justin Bieber's so gangsta' these days, he's now droppin' sizzurp similes to describe his interpretation of "love."
The Biebs posted two new songs to SoundCloud -- under the ridiculous name Sir Bizzle -- one of which is an atrocious ballad called "We Were Born for This."
Biebs has never included sizzurp in his music before ... but threw a reference in his new song:
but the boys and the girls they don’t know what love is like love is like appreciation mixed in a double cup of sprite
As TMZ first reported, Bieber has a long connection with sizzurp ... having once been caught on camera in an ATL nightclub holding a double cup.
Now, it's clear ... he's not afraid to mix work and play.