Green’s Dictionary of Slang

ramped adj.

[SE ramage; high spirits or rampage, a state of boisterous excitement]
(US campus)

1. drunk.

[[UK]Sl. Dict. 266: Rampage, to be on the on the drink].
[US]Eble Sl. and Sociability 13: Sometimes a new slang form either replaces an earlier one or provides another synonym for a notion already named in slang, like ramped, ranked, ted (from wasted), and toe (from torn) for ‘drunk’.

2. tired.

[US]Eble Campus Sl. Apr.