it is everlasting destruction.—Compare Re 17:16; 18:8, 15-17, 19.
Therefore, those who are ‘tormented forever’ (from Gr., ba‧sa‧ni′zo) in the lake of fire undergo “second death” from which there is no resurrection. The related Greek word ba‧sa‧ni‧stes′ is translated ‘jailer’ in Matthew 18:34. (RS, NW, ED; compare vs 30.) Thus those hurled into the lake of fire will be held under restraint, or “jailed,” in death throughout eternity.
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it is everlasting destruction.—Compare Re 17:16; 18:8, 15-17, 19.
Therefore, those who are ‘tormented forever’ (from Gr., ba‧sa‧ni′zo) in the lake of fire undergo “second death” from which there is no resurrection. The related Greek word ba‧sa‧ni‧stes′ is translated ‘jailer’ in Matthew 18:34. (RS, NW, ED; compare vs 30.) Thus those hurled into the lake of fire will be held under restraint, or “jailed,” in death throughout eternity.
This means the second death, the lake of fire.”—Re 20:14; 21:8.Death is said to be hurled into this lake of fire. (Re 20:14, 20) Death obviously cannot be literally burned. Moreover, the Devil, an invisible spirit creature, is thrown into the lake. Being spirit, he cannot be hurt by literal fire.—Re 20:10; compare Ex 3:2 and Jg 13:20.
Since the lake of fire represents “the second death” and since Revelation 20:14 says that both “death and Hades” are to be cast into it, it is evident that the lake cannot represent the death man has inherited from Adam (Ro 5:12), nor does it refer to Hades (Sheol). It must, therefore, be symbolic of another kind of death, one that is without reversal, for the record nowhere speaks of the “lake” as giving up those in it, as do Adamic death and Hades (Sheol). (Re 20:13) Thus, those not found written in “the book of life,” unrepentant opposers of God’s sovereignty, are hurled into the lake of fire, meaning eternal destruction, or the second death.—Re 20:15.

It represents hell, and unremorseful criminals will be swimming in it!

ALL MY FRIENDS WILL BE THERE !!! Hehe

It represents God's final judgement for the unforgiven, a place so horrible that only a fool would risk going there. Imagine a place that for all eternity you will be subjected to extreme pain, grief and hopelessness. These will befall all those outside of God's love. For the bible says that God hates sin and only through Him sins are forgiven.