In hebrew: La-tet ba-rosh, Ten ba-rosh.
General: to do something in harsh, extreme, full-on manner.
Used for:
Partying hard, getting high or drunk, smoking pot (namely using bong);
Intense sexual activity;
Beating and fighting, dispute and violence.
See this lady with the big ones? I would give in the head to her anytime.
This guy took our parking space - give him in the head!