Edit and modify pictures on the computer, often to produce a funny effect. The verb comes from the ironical Russian nickname for Photoshop — Фотожаба, after aphaeresis and suffixation.
Сегодня жабим советский плакат про спорт.
Today we’ll deface a Soviet sports poster.
(Артемий Лебедев @ ЖЖ, 01/2010)