Definition 1 of 1
In context can refer to different levels of activity between a guy and a girl who have chemistry.
At the lowest level, can signify shared mutual looks of affection.
At a slightly higher level of intensity, can refer to "unintentional" physical brushing.
At an even higher level of intensity, can refer to holding hands or even making out.
Don't do achaks-machaks in class, or you'll get caught!
Added 2011-07-19 by thewanderingv