what's her / your etc game?

what's her / your etc game? BrE spokenused to ask what the true reason for someone's behaviour is她/你等为什么这样做？ 她/你等在搞什么名堂？:•Reg is being very nice all of a sudden. What's his game?雷格突然变得非常和蔼可亲，他在耍什么花招？

• musk duck
• EDB
• mamma's darling
• soliloquizings
• baculite
• trumpet call
• gambler
• bedmates
• you can't win them all
• Five-year Plan
• inerasible
• spring upon
• huggingly
• orchiditis
• margravial
• skyhigh balloon
• aversion therapies
• collodion process
• reversal of dip
• Anqing
• quake like an aspen leaf
• irreproducible
• endogamic
• grand tours
• backslaps
• bloating
• beekeeping
• somesthetics
• numnahs
• rubstone
• petrous
• methyl ethyl ketones
• Karaites
• oneness
• catoptromancy
• biological oxidation
• Dead Sea Scrolls
• specifyings
• turn sb out (of/from sth)
• worse off
• congratulating
• blackener
• bromine
• praxiological
• caponette
• cytomorphology
• bottom dollar
• cold turkeys
• petrophysicists
• countercurrently
• circuit breakers
• diamond dust
• cutinized
• buttonhooks
• rng
• ants
• benzyl cinnamate
• Salicaceous
• going strong
• pusillanimity
• love lives
• Goertler parameter
• Henze, Hans Werner
• cold type
• bob up
• bullmia
• make a porridge
• pheneticist
• Compton
• predate
• flings
• compassless
• ground control
• madreporians
• Macrouridae
• economic potential for war
• immolation
• help sb up
• economy size / pack
• admitters
• goolies
• nickel silver
• drop something like a hot chestnut
• cape gooseberry
• endocarps
• tabasheers
• mangabey
• douceness
• armourized
• ε-aminocaproic acid
• minars
• NAAFIs
• anadromous
• lovebubbles
• pollinizers
• Mennonites
• vanadinite
• dolloped
• fuzz tone
• muck about / around