Top definition
Where a boy/man moves onto the 'bases' on relationships frequently or too quickly. eg first base (kiss) second base (oral) so on.

Preferably moving quite frequently, onto many girls, doing sexual activities. Known also as a player.
Harry: I got sucked off by Kirsten yesterday night, but the day before fingered Katy in a bush!

Martin: Harry you baseman!

Or

Cindy: Did you hear that Harry got head off Kirsten but fingered Katy and tried to have sex with Marie!

Laura: Ew, OMG, what a baseman
by Hahayoubaseman November 03, 2013
Get the mug
Get a baseman mug for your daughter-in-law Nathalie.
Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
Get the mug
Get a jabbed mug for your fish Riley.