Most of the tweets of his I've seen have been perfectly normal. (Despite the fact I enjoy posting random weird ones here like the underwear thing.) He mostly replies to people. Whenever I look, I skip over those because they're too out-of-context. Must be Google Translate (which is awful with Japanese unless it's unrealistically simple/basic and perfect grammatically).
Some ordinary ones are just interesting for the glimpse into what interests him (a lot of hardcore otaku stuff, that's what)
. Like just 16h ago he posted "I want one of these
!" and then immediately after, "Red would be niiiice." Perfectly ordinary stuff really, but it reminds me of a more upscale version snuggie blanket. :'D