I call JJ the 50/50 hand because you'll like the flop about half the time.
JJ has many strengths:
Jacks are the 4th best starting hand overall
About 50% of the time you will have an over-pair or a set on the flop
Jacks are an easy hand to fold on bad flops
JJ also has its share of weaknesses:
About 50% of the time you won't like the flop (it will contain at least 1 over-card)
Jacks do not dominate many hands players call raises (or re-raise)with -AQ, AK, QK, QQ, KK, AA
