Behaving with intense sexual interest, specifically in men;
being horny,
lustful, randy, or intent on sexual activity; thinking with your dick/cock.
"That chick at the party last night was so hot!! As soon as I saw her, I was on the 'glan plan.'"
"
Oh honey, just ignore those
losers! They haven't been
laid in months, and now they are all on the glan plan."