Answer My Riddle Pleeease! :)?

[love_baseball]

Okay. Here Goes

"On January 1st, Lisa Stated ' Two Days Ago I Was 15 Years Old. Next Year, I Will Be 18 Years Old.' She Is Not Lying. Explain How This Is Possible."

Pleeease Pleeasee PLEASE Help Me Solve This!

 

[green n lovn' it]

she was born on the 31st of dec!

lolz ifeel so smart right now...
u just boosted my confidence so im going to try to finish my precal.c home work
d^_^b

 

[JILLY B]

she did not tell the year

 

[Jason]

Her birthday was December 31st.

She was fifteen 2 days ago, on Dec 30th of the previous year. She turned 16 on Dec 31st of the previous year, a day earlier. On Dec 31st of this year she will turn 17. On Dec 31st of next year she will turn 18.