To use an impermeable material to recreate the effect that a (condom,jonny)would have at the moment of ejaculation. String, elastic bands and other crafting methods may be utilised to achieve the desired result.
Mainly used unsuccessfully by chavs and squaddies who cant afford to buy the bulk of condoms they need for everyday life. Can be used also in a chat up line such as 'lets wigwambang'.
Tinny didnt have a jonny but remembered a classic wigwamming technique He grabbed a crisp packet that was lying next to him under the bush and placed it over the end of his knob.
I didnt get her pregnant cos i wigwammed (plr).