when a college student sits down gets serious and gets loads of school work done
I need an A on the exam tomorrow so I have to lock in tonight
you better lock in this week so you can pass
Drinking within a Pub after opening hours, the landlord allows a group to keep drinking after all other customers have left. They have locked all the doors, hence it being called a Lock In. When a Lock-In is permitted it usually results in a legendary sesh.
John the pub landlord allowed us to do a lock-in and keep seshing into the morning.
When your geeked and you have to act normal in a tense situation.
"Bruh I can't do this geeked i got to lock in*
When you have to be wacth skibidi toilet while edging or else you will lose your sigma mewing streak