(Well) what do you know!

something that you say when you are surprised by a piece of information.

And they're getting married? Well, what do you know!

Well, what do you know! The Raiders lost again. (humorous)

• join the ranks of
• join the ranks of something
• join up
• joker in the pack
• joke's on
• joke's on someone
• judgment call
• juggling act
• juice up
• juice up something
• jump all over
• jump all over someone
• jump at
• jump at something
• jump bail
• jump down someone's throat
• jump down throat
• jump for joy
• jump in
• jump in at the deep end
• jump in with both feet
• jump on the bandwagon
• jump out of the frying pan and into the fire
• jump out of the frying pan into the fire
• jump ship