Alternative spelling for G-Lag.
"Man how long did you take to answer that question, were you having a massive geelag or something???
The time lapse between someone asking a question and someone responding having Googled the answer.
Person A: Does anyone know the height of mount Everest?
Person B: Hang on, just having a G-Lag . . .
. . . yes, it's 8848m or 29029 ft.