cum bag Share definition Flag a girl who has far to much sex resulting in her being full of seman! I bet that dirt bird had sex last night! yeah shes a total cum bag! cum bag by mike January 5, 2004 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug