Never knew this, but apparently trumping is used colloquially by some in England to mean farting.
"In British slang, however, “to trump” (intransitive verb) also means to expel gas through the anus — e.g. Trumped from eating too much baked beans — often in a highly audible way (as in with trailing sound)."
Now what is that unpleasant smell emerging from the US political scene?