To be going through withdrawals usually associated with drugs. More specifically marijuana.
Got any pot Pip? I'm jonsen.
by Dudeman January 10, 2004
Can you define these popular missing words?
Jonsen pronounced (joan + sin) is to be boo loving or communicating with someone you like in a sweet way whether in person or on the phone... etc
Tisha need to stop jonsen on the phone with her boyfriend.
by Betty Boopi September 24, 2006