• fet it on,
• vet it on,
• bet it on,
• het it on,
• yet it on,
• tet it on,
• gwt it on,
• gst it on,
• gdt it on,
• grt it on,
• g4t it on,
• g3t it on,
• ger it on,
• gef it on,
• geg it on,
• gey it on,
• ge6 it on,
• ge5 it on,
• get ut on,
• get jt on

The adjective form of "get it on" would be "get-it-on" or "get-it-on-esque". These forms signify something or someone that is related to, or resembling, the act of getting it on, which is slang for engaging in sexual activity or intimate behavior.