Teerak loosely means "Darling" or "My Love". On the scale of 1 to 5 it is just a little under "girlfriend" and indeed "fiance". It is most often heard in the expression "Up 2 U Teerak". Thai people often translate "Teerak" as "Honey" as in "Honey I'm home". This can be convenient as it means that the BG's do not have to remember your name when having a good time with you. "Oooh honey etc".
Jing Jing sounds a bit like "Ching Ching". It means "I am telling the truth however unlikely it may seem". "I am 24, Jing Jing". Given the ability of TG's to act on an oscar scale it is quite interesting when a TG declares a statement with "Jing Jing" as it probably is true.
jing jing, definately a 'j' sound. starts with the letter 'jor jaan' - meaning true
Thai's say things twice to emphasise it's meaning. Often used as 'jing sii'.