Green’s Dictionary of Slang

gorge out v.

[SE gorge, a ravine with rocky walls]

(US campus) to commit suicide by jumping from a high cliff.

[US]Baker et al. CUSS.
[US] W. Safire What’s The Good Word? 301: ‘To gorge out’ [...] does not refer to eating three banana splits (that’s ‘pigging out’) but to jumping off one of the many scenic bridges on campus.