[header] How to remove chewing gum from cotton [title] Make an ice cube sandwich. [step] Soft, mushy chewing gum will harden like a rock when frozen, and be much easier to remove. Often, two ice cubes are all you need to get the job started. 
[substeps] Lay the gummed up spot of the garment, gum side down, on top of an ice cube. Place a second ice cube on top of the spot.