Teahead is British slang for a habitual user of cannabis.
Pass the puffer, you tea-head.
מאת j. zerusi 15 בינואר, 2005
1 more definition
Beat slang for someone who smokes a lot of marijuana.
The Mexican jooks were full of teaheads in those days.
מאת 23skidoo 22 בינואר, 2009